revert unnecessary change

Author: lunny

routers/api/v1/utils/hook.go

@@ -198,6 +198,7 @@ func addHook(ctx *context.APIContext, form *api.CreateHookOption, ownerID, repoI
 				webhook_module.HookEventPullRequestAssign:        pullHook(form.Events, string(webhook_module.HookEventPullRequestAssign)),
 				webhook_module.HookEventPullRequestLabel:         pullHook(form.Events, string(webhook_module.HookEventPullRequestLabel)),
 				webhook_module.HookEventPullRequestMilestone:     pullHook(form.Events, string(webhook_module.HookEventPullRequestMilestone)),
+				webhook_module.HookEventPullRequestComment:       pullHook(form.Events, string(webhook_module.HookEventPullRequestComment)),
 				webhook_module.HookEventPullRequestReview:        pullHook(form.Events, "pull_request_review"),
 				webhook_module.HookEventPullRequestReviewRequest: pullHook(form.Events, string(webhook_module.HookEventPullRequestReviewRequest)),
 				webhook_module.HookEventPullRequestSync:          pullHook(form.Events, string(webhook_module.HookEventPullRequestSync)),