chore: remove redundant adodbapi warning (#19557)

(cherry picked from commit 0d331f5bd8)

superset/db_engine_specs/__init__.py

@@ -116,6 +116,9 @@ def get_available_engine_specs() -> Dict[Type[BaseEngineSpec], Set[str]]:
                 hasattr(attribute, "dialect")
                 and inspect.isclass(attribute.dialect)
                 and issubclass(attribute.dialect, DefaultDialect)
+                # adodbapi dialect is removed in SQLA 1.4 and doesn't implement the
+                # `dbapi` method, hence needs to be ignored to avoid logging a warning
+                and attribute.dialect.driver != "adodbapi"
             ):
                 try:
                     attribute.dialect.dbapi()