ref(feedback): remove 'go to old uf' button (#64964)

merge when we remove the beta flag for UF! no need to link to old UF
anymore

<img width="1250" alt="SCR-20240209-kjpl"
src="https://github.com/getsentry/sentry/assets/56095982/50016927-2db3-42eb-9e60-6813f9feb804">

Relates to:
* https://github.com/getsentry/sentry/issues/64671

static/app/components/feedback/oldFeedbackButton.tsx

@@ -1,41 +0,0 @@
-import {LinkButton} from 'sentry/components/button';
-import ExternalLink from 'sentry/components/links/externalLink';
-import {Tooltip} from 'sentry/components/tooltip';
-import {t, tct} from 'sentry/locale';
-import {useLocation} from 'sentry/utils/useLocation';
-import useOrganization from 'sentry/utils/useOrganization';
-import {normalizeUrl} from 'sentry/utils/withDomainRequired';
-
-export default function OldFeedbackButton() {
-  const location = useLocation();
-  const organization = useOrganization();
-
-  return (
-    <Tooltip
-      title={tct('View [link:error-associated feedback reports].', {
-        link: (
-          <ExternalLink href="https://docs.sentry.io/product/user-feedback/#crash-report-modal" />
-        ),
-      })}
-      position="left"
-      isHoverable
-    >
-      <LinkButton
-        analyticsEventName="Clicked Go To Old User Feedback Button"
-        analyticsEventKey="feedback.index-old-ui-clicked"
-        size="sm"
-        priority="default"
-        to={{
-          pathname: normalizeUrl(`/organizations/${organization.slug}/user-feedback/`),
-          query: {
-            ...location.query,
-            query: undefined,
-            cursor: undefined,
-          },
-        }}
-      >
-        {t('Go to Old User Feedback')}
-      </LinkButton>
-    </Tooltip>
-  );
-}

static/app/views/feedback/feedbackListPage.tsx

@@ -10,7 +10,6 @@ import FeedbackSearch from 'sentry/components/feedback/feedbackSearch';
 import FeedbackSetupPanel from 'sentry/components/feedback/feedbackSetupPanel';
 import FeedbackWhatsNewBanner from 'sentry/components/feedback/feedbackWhatsNewBanner';
 import FeedbackList from 'sentry/components/feedback/list/feedbackList';
-import OldFeedbackButton from 'sentry/components/feedback/oldFeedbackButton';
 import useCurrentFeedbackId from 'sentry/components/feedback/useCurrentFeedbackId';
 import useHaveSelectedProjectsSetupFeedback, {
   useHaveSelectedProjectsSetupNewFeedback,
@@ -71,9 +70,6 @@ export default function FeedbackListPage({}: Props) {
                 />
               </Layout.Title>
             </Layout.HeaderContent>
-            <Layout.HeaderActions>
-              <OldFeedbackButton />
-            </Layout.HeaderActions>
           </Layout.Header>
           <PageFiltersContainer>
             <ErrorBoundary>