Revert "Fetch multiple Redmine tickets with one call"

This reverts commit 2004136.

services/redmine.py

@@ -69,32 +69,6 @@ def get_issue(self, issue_id: str = "", **kwargs) -> Issue | None:
             return None
         return self._to_issue(info)
 
-    def get_issues(self, issues: list[dict]) -> list[Issue | None]:
-        try:
-            found = [
-                self._to_issue(info)
-                for info in self.client.issue.filter(
-                    issue_id=",".join([issue["issue_id"] for issue in issues])
-                )
-            ]
-        except (BaseRedmineError, RequestException) as exc:
-            logging.error("Redmine: %s: get_issues(): %s", self.url, exc)
-            return []
-        found_ids = {str(issue.raw["id"]) for issue in found}
-        not_found = [
-            self._not_found(
-                tag=f"{self.tag}#{issue['issue_id']}",
-                url=f"{self.url}/issues/{issue['issue_id']}",
-            )
-            for issue in issues
-            if issue["issue_id"] not in found_ids
-        ]
-        # Old Redmine instances don't support fetching multiple issues at once
-        # so fetch them one by one in the base class calling get_issue() above
-        if len(found) == 1 and len(not_found) >= len(found):
-            return super().get_issues(issues)
-        return found + not_found  # type: ignore
-
     def _to_issue(self, info: Any) -> Issue:
         return Issue(
             tag=f"{self.tag}#{info.id}",