Remove duplicate pyupgrade setup

Already enabled as a ruff rule set

Relates to #236

Author: ulgens

.pre-commit-config.yaml

@@ -14,10 +14,3 @@ repos:
       - id: ruff-check
         args: ["--fix"]
       - id: ruff-format
-
-  - repo: https://github.com/asottile/pyupgrade
-    rev: v3.21.2
-    hooks:
-      - id: pyupgrade
-        args:
-          - --py313-plus