[pytorch][mobile] deprecate the LLVM-based static analyzer (pytorch#68180)

Summary:
Pull Request resolved: pytorch#68180

Since we've open sourced the tracing-based selective build, we can deprecate the
op-dependency-graph-based selective build and the static analyzer tool that
produces the dependency graph.
ghstack-source-id: 143108377

Test Plan: CIs

Reviewed By: seemethere

Differential Revision: D32358467

fbshipit-source-id: c61523706b85a49361416da2230ec1b035b8b99c

Author: ljk53

.flake8

@@ -16,7 +16,6 @@ per-file-ignores = __init__.py: F401 torch/utils/cpp_extension.py: B950
 optional-ascii-coding = True
 exclude =
     ./.git,
-    ./build_code_analyzer,
     ./build_test_custom_build,
     ./build,
     ./caffe2,

.github/generated-ciflow-ruleset.json

@@ -368,17 +368,6 @@ def generate_workflow_file(self, workflow_template: jinja2.Template) -> None:
             labels={LABEL_CIFLOW_LINUX, LABEL_CIFLOW_MOBILE, LABEL_CIFLOW_DEFAULT},
         ),
     ),
-    CIWorkflow(
-        arch="linux",
-        build_environment="linux-xenial-py3-clang5-mobile-custom-build-dynamic",
-        docker_image_base=f"{DOCKER_REGISTRY}/pytorch/pytorch-linux-xenial-py3-clang5-android-ndk-r19c",
-        test_runner_type=LINUX_CPU_TEST_RUNNER,
-        build_generates_artifacts=False,
-        exclude_test=True,
-        ciflow_config=CIFlowConfig(
-            labels={LABEL_CIFLOW_LINUX, LABEL_CIFLOW_MOBILE, LABEL_CIFLOW_DEFAULT},
-        ),
-    ),
     CIWorkflow(
         arch="linux",
         build_environment="linux-xenial-py3-clang5-mobile-custom-build-static",
@@ -390,17 +379,6 @@ def generate_workflow_file(self, workflow_template: jinja2.Template) -> None:
             labels={LABEL_CIFLOW_LINUX, LABEL_CIFLOW_MOBILE, LABEL_CIFLOW_DEFAULT},
         ),
     ),
-    CIWorkflow(
-        arch="linux",
-        build_environment="linux-xenial-py3-clang5-mobile-code-analysis",
-        docker_image_base=f"{DOCKER_REGISTRY}/pytorch/pytorch-linux-xenial-py3-clang5-android-ndk-r19c",
-        test_runner_type=LINUX_CPU_TEST_RUNNER,
-        build_generates_artifacts=False,
-        exclude_test=True,
-        ciflow_config=CIFlowConfig(
-            labels={LABEL_CIFLOW_LINUX, LABEL_CIFLOW_MOBILE},
-        ),
-    ),
     CIWorkflow(
         arch="linux",
         build_environment="linux-xenial-py3.6-clang7-asan",