Revert "test: skip test_gitlint on PR #5048"

This reverts commit 38a6faf.

Signed-off-by: Patrick Roy <[email protected]>

Author: roypat

tests/integration_tests/style/test_gitlint.py

@@ -4,16 +4,10 @@
 
 import os
 
-import pytest
-
 from framework import utils
 from framework.ab_test import DEFAULT_A_REVISION
 
 
-@pytest.mark.skipif(
-    os.environ.get("BUILDKITE_PULL_REQUEST") == "5048",
-    reason="PR of a feature branch from before this test was modified to follow Linux sign-off rules for co-authors.",
-)
 def test_gitlint():
     """
     Test that all commit messages pass the gitlint rules.