Fix review comments

Author: kuznetsss

.github/workflows/tools-rippled.yml

@@ -98,7 +98,6 @@ jobs:
             DOXYGEN_VERSION=${{ env.DOXYGEN_VERSION }}
             GCC_VERSION=${{ env.GCC_VERSION }}
             GRAPHVIZ_VERSION=${{ env.GRAPHVIZ_VERSION }}
-            LLVM_VERSION=${{ env.LLVM_VERSION }}
             PRE_COMMIT_VERSION=${{ env.PRE_COMMIT_VERSION }}
           context: docker/tools-rippled
           outputs: type=image,name=${{ env.CONTAINER_IMAGE }},push-by-digest=true,name-canonical=true,push=${{ env.PUSH }}
@@ -128,7 +127,6 @@ jobs:
     strategy:
       matrix:
         tool:
-          - clang-tidy
           - documentation
           - pre-commit
           - signing

docker/ubuntu/Dockerfile

@@ -228,7 +228,7 @@ printf "%s\n" \
   "Acquire::AllowWeakRepositories \"true\";" \
   | tee /etc/apt/apt.conf.d/99llvm-allow-weak
 
-# Add LLVM repository for versions above 20
+# Add LLVM repository for versions above 20 because it is not available in the default repo
 if [[ "${CLANG_VERSION}" -gt 20 ]]; then
   apt-get update
   apt-get install -y --no-install-recommends lsb-release software-properties-common gnupg