Remove non implemented method _prepare_clone_url_with_token from providers which don't support it and instead, issue a warning in base class.

pr_agent/git_providers/codecommit_provider.py

@@ -495,6 +495,3 @@ class CodeCommitProvider(GitProvider):
             lang: round(count / total_files * 100) for lang, count in lang_count.items()
         }
         return lang_percentage
-
-    def _prepare_clone_url_with_token(self, repo_url_to_clone: str) -> str | None:
-        raise Exception("Not implemented!")