chore: Tidy unused files (#1158)

Removes configuration for sonar scanning action that was left by #1092
And tidies the pre-commit action to allow the catalog-info to be checked
for validity in the CI

Author: DiamondJoseph

.pre-commit-config.yaml

@@ -4,7 +4,8 @@ repos:
     hooks:
       - id: check-added-large-files
       - id: check-yaml
-        exclude: ^helm\/.*\/templates\/.*|catalog-info.yaml
+        exclude: ^helm/blueapi/templates/
+        args: [--allow-multiple-documents]
       - id: check-merge-conflict
       - id: end-of-file-fixer