Revert "Fix schedule tasks bugs (#28691)"

This reverts commit 97292da960.

(cherry picked from commit 83e5eba0311dc601518fb1a07a7e8538e573a837)
(cherry picked from commit f6ef8f3819b5990858b0997cac72af000a3f3e3a)

Conflicts:
	services/repository/setting.go

modules/actions/github.go

@@ -22,7 +22,6 @@ const (
 	GithubEventRelease                  = "release"
 	GithubEventPullRequestComment       = "pull_request_comment"
 	GithubEventGollum                   = "gollum"
-	GithubEventSchedule                 = "schedule"
 )
 
 // canGithubEventMatch check if the input Github event can match any Gitea event.
@@ -70,9 +69,6 @@ func canGithubEventMatch(eventName string, triggedEvent webhook_module.HookEvent
 			return false
 		}
 
-	case GithubEventSchedule:
-		return triggedEvent == webhook_module.HookEventSchedule
-
 	default:
 		return eventName == string(triggedEvent)
 	}