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/deployment/signing-disabled.yaml

@@ -3,11 +3,11 @@ release:
   name: gitea-unittests
   namespace: testing
 templates:
-  - templates/gitea/deployment.yaml
-  - templates/gitea/config.yaml
+  - templates/deployment.yaml
+  - templates/config.yaml
 tests:
   - it: skips gpg init container
-    template: templates/gitea/deployment.yaml
+    template: templates/deployment.yaml
     asserts:
       - notContains:
           path: spec.template.spec.initContainers
@@ -15,7 +15,7 @@ tests:
           content:
             name: configure-gpg
   - it: skips gpg env in `init-directories` init container
-    template: templates/gitea/deployment.yaml
+    template: templates/deployment.yaml
     set:
       signing.enabled: false
     asserts:
@@ -25,14 +25,14 @@ tests:
             name: GNUPGHOME
             value: /data/git/.gnupg
   - it: skips gpg env in runtime container
-    template: templates/gitea/deployment.yaml
+    template: templates/deployment.yaml
     asserts:
       - notContains:
           path: spec.template.spec.containers[0].env
           content:
             name: GNUPGHOME
   - it: skips gpg volume spec
-    template: templates/gitea/deployment.yaml
+    template: templates/deployment.yaml
     asserts:
       - notContains:
           path: spec.template.spec.volumes