Do not run lintrunner init in lintrunner CI job

Two reasons:
1) It will end up spamming pip install -r requirements-dev.txt once for each linter because of the way we have init commands set up. This is fixable, but:
2) setup_linux sets up lintrunner for us already anyway via install_requirements.


ghstack-source-id: 243e923
ghstack-comment-id: 3286097617
Pull-Request: #14263

Author: swolchok

.github/workflows/lint.yml

@@ -45,9 +45,6 @@ jobs:
           cp -r "${CACHE_DIRECTORY}" . || true
         fi
 
-        # This has already been cached in the docker image
-        lintrunner init
-
         RC=0
         # Run lintrunner on all files
         if ! lintrunner --force-color --all-files --tee-json=lint.json 2> /dev/null; then