fix: rm cppcheck from pre-commit

- the repo is not maintained anymore
- cppcheck is mostly redundant with clang-tidy (based on my experience)
- this error started to appear, which I'm not sure where it comes from:
cppcheck: error:  suppression 'unmatchedSuppression' already exists
  and removing unmatchedSuppression from the suppress file makes it raise
  the same error for missingIncludeSystem.

Author: bkueng

.pre-commit-config.yaml

@@ -41,9 +41,4 @@ repos:
     rev: 'v14.0.6'
     hooks:
       - id: clang-format
-  - repo: https://github.com/pocc/pre-commit-hooks
-    rev: 'v1.3.5'
-    hooks:
-      - id: cppcheck
-        args: [ "--suppressions-list=.cppcheck-suppress", "--inline-suppr" ]