webhook: remove annotation virtual branch

internal/services/gateway/webhook.go

@@ -49,8 +49,6 @@ const (
 	AnnotationRunType   = "runtype"
 	AnnotationProjectID = "projectid"
 	AnnotationUserID    = "userid"
-	// AnnotationVirtualBranch represent a "virtual branch": i.e a normal branch, a pr (with name pr-$prid), a tag (with name tag-tagname)
-	AnnotationVirtualBranch = "virtual_branch"
 
 	AnnotationCommitSHA   = "commit_sha"
 	AnnotationRef         = "ref"
@@ -67,19 +65,6 @@ const (
 	AnnotationPullRequestLink = "pull_request_link"
 )
 
-func genAnnotationVirtualBranch(webhookData *types.WebhookData) string {
-	switch webhookData.Event {
-	case types.WebhookEventPush:
-		return "branch-" + webhookData.Branch
-	case types.WebhookEventTag:
-		return "tag-" + webhookData.Tag
-	case types.WebhookEventPullRequest:
-		return "pr-" + webhookData.PullRequestID
-	}
-
-	panic(fmt.Errorf("invalid webhook event type: %q", webhookData.Event))
-}
-
 type webhooksHandler struct {
 	log               *zap.SugaredLogger
 	ah                *action.ActionHandler
@@ -276,7 +261,6 @@ func (h *webhooksHandler) handleWebhook(r *http.Request) (int, string, error) {
 	annotations := map[string]string{
 		AnnotationRunType:     string(runType),
 		AnnotationEventType:   string(webhookData.Event),
-		AnnotationVirtualBranch: genAnnotationVirtualBranch(webhookData),
 		AnnotationCommitSHA:   webhookData.CommitSHA,
 		AnnotationRef:         webhookData.Ref,
 		AnnotationSender:      webhookData.Sender,