remove redundant errors check

Author: aaronsteers

airbyte_cdk/test/standard_tests/source_base.py

@@ -81,11 +81,8 @@ def test_spec(self) -> None:
             test_scenario=None,
             connector=self.create_connector(scenario=None),
         )
-        if result.errors:
-            raise AssertionError(
-                f"Expected no errors but got {len(result.errors)}: \n"
-                + "\n".join([str(e) for e in result.errors])
-            )
+        # If an error occurs, it will be raised above.
+
         assert len(result.spec_messages) == 1, (
             "Expected exactly 1 spec message but got {len(result.spec_messages)}",
             result.errors,