refac(structure): remove leading gitea directory

The following pull request removes the `gitea` directory. With regard to
maintaining act_runners in a separate git repository or helm chart, this
additional directory becomes redundant.

unittests/helm/networkPolicy/networkPolicy.yaml

@@ -6,7 +6,7 @@ release:
   name: gitea-unittest
   namespace: testing
 templates:
-  - templates/gitea/networkPolicy.yaml
+  - templates/networkPolicy.yaml
 tests:
   - it: Skip rendering networkPolicy
     set: