refactor: remove --home flag/feature

We are removing this because it was removed upstream in PR~115599.

ci/dev/test.sh

@@ -16,9 +16,6 @@ main() {
     echo "  \$PASSWORD"
     echo "  \$CODE_SERVER_ADDRESS"
     echo -e "\n"
-    echo "Please make sure you have code-server running locally with the flag:"
-    echo "  --home \$CODE_SERVER_ADDRESS/healthz "
-    echo -e "\n"
     exit 1
   fi
   CS_DISABLE_PLUGINS=true ./test/node_modules/.bin/jest "$@"