Drop paths-ignore from build operator workflow

We build containers and push to registry in post merge workflow.
Not building container for each hash can cause issue becuase
of missing container tags. Pin-custom-bundle-dockerfile.sh
(openstack-operator) can pin to hash for which images are not
available.

Author: Sandeepyadav93

.github/workflows/build-mariadb-operator.yaml

@@ -4,20 +4,6 @@ on:
   push:
     branches:
       - '*'
-    paths-ignore:
-      - .gitignore
-      - .pull_request_pipeline
-      - changelog.txt
-      - kuttl-test.yaml
-      - LICENSE
-      - Makefile
-      - OWNERS
-      - PROJECT
-      - README.md
-      - .github/
-      - build/
-      - docs/
-      - tests/
 
 env:
   imageregistry: 'quay.io'