deprecate isErrorRetryable

Author: Krish

src/main/java/software/amazon/awssdk/crt/http/HttpClientConnection.java

@@ -159,6 +159,7 @@ private static void onConnectionAcquired(CompletableFuture<HttpClientConnection>
      * @return true if the error that generated the exception makes sense for a retry, and
      * false otherwise.
      */
+    @Deprecated  // use CRT.awsGetErrorType() instead
     public static boolean isErrorRetryable(HttpException exception) {
         // why take an exception rather than an error code directly?
         // to give us breathing room for changing our mind later about how we convey