diff --git a/src/middleware/axum.rs b/src/middleware/axum.rs
index 0c5a5ba..0722a44 100644
--- a/src/middleware/axum.rs
+++ b/src/middleware/axum.rs
@@ -64,12 +64,11 @@ where
     type Future = ResponseFuture<S::Future>;
 
     fn poll_ready(&mut self, cx: &mut Context<'_>) -> Poll<Result<(), Self::Error>> {
-        self.inner.poll_ready(cx).map_err(Into::into)
+        self.inner.poll_ready(cx)
     }
 
     fn call(&mut self, req: Request<B>) -> Self::Future {
         use tracing_opentelemetry::OpenTelemetrySpanExt;
-        let req = req;
         let span = if self.filter.map_or(true, |f| f(req.uri().path())) {
             let span = otel_http::http_server::make_span_from_request(&req);
             let route = http_route(&req);
diff --git a/src/otlp.rs b/src/otlp.rs
index 4729495..59271ad 100644
--- a/src/otlp.rs
+++ b/src/otlp.rs
@@ -10,8 +10,6 @@ use opentelemetry_sdk::{
     trace::{Sampler, Tracer},
     Resource,
 };
-// #[cfg(feature = "tls")]
-// use tonic::transport::ClientTlsConfig;
 
 #[must_use]
 pub fn identity(
@@ -40,12 +38,6 @@ where
             .with_endpoint(endpoint)
             .with_headers(read_headers_from_env())
             .into(),
-        // #[cfg(feature = "tls")]
-        // "grpc/tls" => opentelemetry_otlp::new_exporter()
-        //     .tonic()
-        //     .with_tls_config(ClientTlsConfig::new())
-        //     .with_endpoint(endpoint)
-        //     .into(),
         _ => opentelemetry_otlp::new_exporter()
             .tonic()
             .with_endpoint(endpoint)
@@ -135,8 +127,7 @@ fn infer_protocol_and_endpoint(
     maybe_protocol: Option<&str>,
     maybe_endpoint: Option<&str>,
 ) -> (String, String) {
-    #[cfg_attr(not(feature = "tls"), allow(unused_mut))]
-    let mut protocol = maybe_protocol.unwrap_or_else(|| {
+    let protocol = maybe_protocol.unwrap_or_else(|| {
         if maybe_endpoint.map_or(false, |e| e.contains(":4317")) {
             "grpc"
         } else {
@@ -144,11 +135,6 @@ fn infer_protocol_and_endpoint(
         }
     });
 
-    // #[cfg(feature = "tls")]
-    // if protocol == "grpc" && maybe_endpoint.unwrap_or("").starts_with("https") {
-    //     protocol = "grpc/tls";
-    // }
-
     let endpoint = match protocol {
         "http/protobuf" => maybe_endpoint.unwrap_or("http://localhost:4318"), //Devskim: ignore DS137138
         _ => maybe_endpoint.unwrap_or("http://localhost:4317"), //Devskim: ignore DS137138
@@ -169,25 +155,6 @@ mod tests {
     #[case(Some("http/protobuf"), None, "http/protobuf", "http://localhost:4318")] //Devskim: ignore DS137138
     #[case(Some("grpc"), None, "grpc", "http://localhost:4317")] //Devskim: ignore DS137138
     #[case(None, Some("http://localhost:4317"), "grpc", "http://localhost:4317")]
-    //Devskim: ignore DS137138
-    // #[cfg_attr(
-    //     feature = "tls",
-    //     case(
-    //         None,
-    //         Some("https://localhost:4317"),
-    //         "grpc/tls",
-    //         "https://localhost:4317"
-    //     )
-    // )]
-    // #[cfg_attr(
-    //     feature = "tls",
-    //     case(
-    //         Some("grpc/tls"),
-    //         Some("https://localhost:4317"),
-    //         "grpc/tls",
-    //         "https://localhost:4317"
-    //     )
-    // )]
     #[case(
         Some("http/protobuf"),
         Some("http://localhost:4318"), //Devskim: ignore DS137138
diff --git a/src/propagation.rs b/src/propagation.rs
index 6d5c756..353882b 100644
--- a/src/propagation.rs
+++ b/src/propagation.rs
@@ -1,7 +1,3 @@
-// Originally retired from davidB/tracing-opentelemetry-instrumentation-sdk
-// which is licensed under CC0 1.0 Universal
-// https://github.com/davidB/tracing-opentelemetry-instrumentation-sdk/blob/d3609ac2cc699d3a24fbf89754053cc8e938e3bf/LICENSE
-
 use opentelemetry::{
     propagation::{
         text_map_propagator::FieldIter, Extractor, Injector, TextMapPropagator,