ci: es-check and tsc are now part of tidy, don't run manually

Author: lolbinarycat

src/ci/docker/host-x86_64/pr-check-1/Dockerfile

@@ -49,6 +49,3 @@ ENV SCRIPT \
   /scripts/validate-toolstate.sh && \
   reuse --include-submodules lint && \
   python3 ../x.py test collect-license-metadata && \
-  # Runs checks to ensure that there are no issues in our JS code.
-  es-check es2019 ../src/librustdoc/html/static/js/*.js && \
-  tsc --project ../src/librustdoc/html/static/js/tsconfig.json