diff --git a/superset-frontend/src/SqlLab/reducers/getInitialState.ts b/superset-frontend/src/SqlLab/reducers/getInitialState.ts
index 8450060faca6..f92f2b7f1523 100644
--- a/superset-frontend/src/SqlLab/reducers/getInitialState.ts
+++ b/superset-frontend/src/SqlLab/reducers/getInitialState.ts
@@ -17,7 +17,6 @@
  * under the License.
  */
 import { t } from '@superset-ui/core';
-import getToastsFromPyFlashMessages from 'src/components/MessageToasts/getToastsFromPyFlashMessages';
 import type { BootstrapData } from 'src/types/bootstrapTypes';
 import type { InitialState } from 'src/hooks/apiResources/sqlLab';
 import {
@@ -245,9 +244,6 @@ export default function getInitialState({
       queryCostEstimates: {},
       unsavedQueryEditor,
     },
-    messageToasts: getToastsFromPyFlashMessages(
-      (common || {})?.flash_messages || [],
-    ),
     localStorageUsageInKilobytes: 0,
     common,
     ...otherBootstrapData,
diff --git a/superset-frontend/src/components/MessageToasts/getToastsFromPyFlashMessages.js b/superset-frontend/src/components/MessageToasts/getToastsFromPyFlashMessages.js
deleted file mode 100644
index e6398b4e3838..000000000000
--- a/superset-frontend/src/components/MessageToasts/getToastsFromPyFlashMessages.js
+++ /dev/null
@@ -1,40 +0,0 @@
-/**
- * Licensed to the Apache Software Foundation (ASF) under one
- * or more contributor license agreements.  See the NOTICE file
- * distributed with this work for additional information
- * regarding copyright ownership.  The ASF licenses this file
- * to you under the Apache License, Version 2.0 (the
- * "License"); you may not use this file except in compliance
- * with the License.  You may obtain a copy of the License at
- *
- *   http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing,
- * software distributed under the License is distributed on an
- * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
- * KIND, either express or implied.  See the License for the
- * specific language governing permissions and limitations
- * under the License.
- */
-import { addToast } from './actions';
-import { ToastType } from './types';
-
-export default function toastsFromPyFlashMessages(flashMessages = []) {
-  const toasts = [];
-
-  flashMessages.forEach(([messageType, message]) => {
-    const toastType =
-      messageType === 'danger'
-        ? ToastType.Danger
-        : (messageType === 'success' && ToastType.Success) || ToastType.Info;
-
-    const toast = addToast({
-      text: message,
-      toastType,
-    }).payload;
-
-    toasts.push(toast);
-  });
-
-  return toasts;
-}
diff --git a/superset-frontend/src/components/MessageToasts/getToastsFromPyFlashMessages.test.js b/superset-frontend/src/components/MessageToasts/getToastsFromPyFlashMessages.test.js
deleted file mode 100644
index fe2ea294f9b7..000000000000
--- a/superset-frontend/src/components/MessageToasts/getToastsFromPyFlashMessages.test.js
+++ /dev/null
@@ -1,48 +0,0 @@
-/**
- * Licensed to the Apache Software Foundation (ASF) under one
- * or more contributor license agreements.  See the NOTICE file
- * distributed with this work for additional information
- * regarding copyright ownership.  The ASF licenses this file
- * to you under the Apache License, Version 2.0 (the
- * "License"); you may not use this file except in compliance
- * with the License.  You may obtain a copy of the License at
- *
- *   http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing,
- * software distributed under the License is distributed on an
- * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
- * KIND, either express or implied.  See the License for the
- * specific language governing permissions and limitations
- * under the License.
- */
-import { ToastType } from 'src/components/MessageToasts/types';
-import getToastsFromPyFlashMessages from 'src/components/MessageToasts/getToastsFromPyFlashMessages';
-
-describe('getToastsFromPyFlashMessages', () => {
-  it('should return an info toast', () => {
-    const toast = getToastsFromPyFlashMessages([['info', 'info test']])[0];
-    expect(toast).toMatchObject({
-      toastType: ToastType.Info,
-      text: 'info test',
-    });
-  });
-
-  it('should return a success toast', () => {
-    const toast = getToastsFromPyFlashMessages([
-      ['success', 'success test'],
-    ])[0];
-    expect(toast).toMatchObject({
-      toastType: ToastType.Success,
-      text: 'success test',
-    });
-  });
-
-  it('should return a danger toast', () => {
-    const toast = getToastsFromPyFlashMessages([['danger', 'danger test']])[0];
-    expect(toast).toMatchObject({
-      toastType: ToastType.Danger,
-      text: 'danger test',
-    });
-  });
-});
diff --git a/superset-frontend/src/dashboard/components/Dashboard.jsx b/superset-frontend/src/dashboard/components/Dashboard.jsx
index 713abfa74f10..038ab148b9bc 100644
--- a/superset-frontend/src/dashboard/components/Dashboard.jsx
+++ b/superset-frontend/src/dashboard/components/Dashboard.jsx
@@ -59,13 +59,11 @@ const propTypes = {
   ownDataCharts: PropTypes.object.isRequired,
   layout: PropTypes.object.isRequired,
   impressionId: PropTypes.string.isRequired,
-  initMessages: PropTypes.array,
   timeout: PropTypes.number,
   userId: PropTypes.string,
 };
 
 const defaultProps = {
-  initMessages: [],
   timeout: 60,
   userId: '',
 };
diff --git a/superset-frontend/src/dashboard/components/Dashboard.test.jsx b/superset-frontend/src/dashboard/components/Dashboard.test.jsx
index a66eab37e37d..d75bda27dc2e 100644
--- a/superset-frontend/src/dashboard/components/Dashboard.test.jsx
+++ b/superset-frontend/src/dashboard/components/Dashboard.test.jsx
@@ -47,7 +47,6 @@ describe('Dashboard', () => {
       triggerQuery() {},
       logEvent() {},
     },
-    initMessages: [],
     dashboardState,
     dashboardInfo,
     charts: chartQueries,
diff --git a/superset-frontend/src/dashboard/components/nativeFilters/FilterBar/FilterBarSettings/FilterBarSettings.test.tsx b/superset-frontend/src/dashboard/components/nativeFilters/FilterBar/FilterBarSettings/FilterBarSettings.test.tsx
index 1c5f2ab2c73c..c179b53099af 100644
--- a/superset-frontend/src/dashboard/components/nativeFilters/FilterBar/FilterBarSettings/FilterBarSettings.test.tsx
+++ b/superset-frontend/src/dashboard/components/nativeFilters/FilterBar/FilterBarSettings/FilterBarSettings.test.tsx
@@ -50,7 +50,6 @@ const initialState: { dashboardInfo: DashboardInfo } = {
     filterBarOrientation: FilterBarOrientation.Vertical,
     common: {
       conf: {},
-      flash_messages: [],
     },
     crossFiltersEnabled: true,
   },
diff --git a/superset-frontend/src/dashboard/containers/Dashboard.ts b/superset-frontend/src/dashboard/containers/Dashboard.ts
index ba91d748dab4..b4808ecbd000 100644
--- a/superset-frontend/src/dashboard/containers/Dashboard.ts
+++ b/superset-frontend/src/dashboard/containers/Dashboard.ts
@@ -48,7 +48,6 @@ function mapStateToProps(state: RootState) {
   } = state;
 
   return {
-    initMessages: dashboardInfo.common?.flash_messages,
     timeout: dashboardInfo.common?.conf?.SUPERSET_WEBSERVER_TIMEOUT,
     userId: dashboardInfo.userId,
     dashboardInfo,
diff --git a/superset-frontend/src/dashboard/types.ts b/superset-frontend/src/dashboard/types.ts
index 48e9c931c44d..bd70398ecad4 100644
--- a/superset-frontend/src/dashboard/types.ts
+++ b/superset-frontend/src/dashboard/types.ts
@@ -117,7 +117,6 @@ export type DashboardState = {
 export type DashboardInfo = {
   id: number;
   common: {
-    flash_messages: string[];
     conf: JsonObject;
   };
   userId: string;