[CI] Reverted gitignore changes (#44497)

Signed-off-by: Andreas Karatzas <akaratza@amd.com>

tools/check_repo.sh

@@ -1,14 +1,6 @@
 #!/bin/bash
 # Checks whether the repo is clean and whether tags are available (necessary to correctly produce vllm version at build time)
 
-# Some Docker builds intentionally omit tracked, non-build files from the
-# context. Restore only those paths from the mounted .git object database before
-# checking cleanliness so release builds still see a coherent worktree.
-if [ -f /.dockerenv ]; then
-	git ls-files -z -- docs .github .pre-commit-config.yaml format.sh \
-		| git checkout-index -f -z --stdin
-fi
-
 if ! git diff --quiet; then
 	echo "Repo is dirty" >&2