Do not log from the finalize guard

The first teardown nulls log.check, so a second call cannot log through the adapter --
which is the very hazard this change is fixing elsewhere.

Co-authored-by: Cursor <cursoragent@cursor.com>

Author: eric-weaver

postgres/datadog_checks/postgres/postgres.py

@@ -541,7 +541,6 @@ def _finalize(self):
         """Tear down check state. Runs at most once, and never while check() is executing."""
         with self._cancel_lock:
             if self._finalized:
-                self.log.debug("Check already finalized, nothing to tear down")
                 return
             self._finalized = True
         self.log.debug("Finalizing check: closing connections and clearing state")