Temporary revert GPG feature for semver based retagging (#373)

Feature #343 happens to be a breaking change when enabling `.Values.signing` but not specifying
any of the new private key properties. Tag `v6.0.2` is therefore not following semantic versioning.

This temporarily reverts commit b8f0310c43 and a fix-up commit 57a1cd27d9
to retag 6.0.2 as 6.0.3.

Co-authored-by: justusbunsi <sk.bunsenbrenner@gmail.com>
Reviewed-on: https://gitea.com/gitea/helm-chart/pulls/373
Reviewed-by: techknowlogick <techknowlogick@gitea.io>
Reviewed-by: luhahn <luhahn@noreply.gitea.io>

templates/gitea/statefulset.yaml

@@ -59,10 +59,6 @@ spec:
             {{- if .Values.statefulset.env }}
             {{- toYaml .Values.statefulset.env | nindent 12 }}
             {{- end }}
-            {{- if .Values.signing.enabled }}
-            - name: GNUPGHOME
-              value: {{ .Values.signing.gpgHome }}
-            {{- end }}
           volumeMounts:
             - name: init
               mountPath: /usr/sbin
@@ -114,36 +110,6 @@ spec:
             {{- include "gitea.init-additional-mounts" . | nindent 12 }}
           securityContext:
             {{- toYaml .Values.containerSecurityContext | nindent 12 }}
-        {{- if .Values.signing.enabled }}
-        - name: configure-gpg
-          image: "{{ include "gitea.image" . }}"
-          command: ["/usr/sbin/configure_gpg_environment.sh"]
-          imagePullPolicy: {{ .Values.image.pullPolicy }}
-          securityContext:
-            {{- /* By default this container runs as user 1000 unless otherwise stated */ -}}
-            {{- $csc := deepCopy .Values.containerSecurityContext -}}
-            {{- if not (hasKey $csc "runAsUser") -}}
-            {{- $_ := set $csc "runAsUser" 1000 -}}
-            {{- end -}}
-            {{- toYaml $csc | nindent 12 }}
-          env:
-            - name: GNUPGHOME
-              value: {{ .Values.signing.gpgHome }}
-          volumeMounts:
-            - name: init
-              mountPath: /usr/sbin
-            - name: data
-              mountPath: /data
-              {{- if .Values.persistence.subPath }}
-              subPath: {{ .Values.persistence.subPath }}
-              {{- end }}
-            - name: gpg-private-key
-              mountPath: /raw
-              readOnly: true
-            {{- if .Values.extraVolumeMounts }}
-            {{- toYaml .Values.extraVolumeMounts | nindent 12 }}
-            {{- end }}
-        {{- end }}
         - name: configure-gitea
           image: "{{ include "gitea.image" . }}"
           command: ["/usr/sbin/configure_gitea.sh"]
@@ -339,15 +305,6 @@ spec:
         {{- end }}
         - name: temp
           emptyDir: {}
-        {{- if .Values.signing.enabled }}
-        - name: gpg-private-key
-          secret:
-            secretName: {{ include "gitea.gpg-key-secret-name" . }}
-            items:
-              - key: privateKey
-                path: private.asc
-            defaultMode: 0100
-        {{- end }}
   {{- if and .Values.persistence.enabled .Values.persistence.existingClaim }}
         - name: data
           persistentVolumeClaim: