chore(nav-cleanup): Remove old nav sidebar code (#99716)

Author: malwilley

static/app/actionCreators/preferences.tsx

@@ -4,17 +4,6 @@ import PreferenceStore from 'sentry/stores/preferencesStore';
 
 const SIDEBAR_COOKIE_KEY = 'sidebar_collapsed';
 const COOKIE_ENABLED = '1';
-const COOKIE_DISABLED = '0';
-
-export function hideSidebar() {
-  PreferenceStore.hideSidebar();
-  Cookies.set(SIDEBAR_COOKIE_KEY, COOKIE_ENABLED);
-}
-
-export function showSidebar() {
-  PreferenceStore.showSidebar();
-  Cookies.set(SIDEBAR_COOKIE_KEY, COOKIE_DISABLED);
-}
 
 export function loadPreferencesState() {
   // Set initial "collapsed" state to true or false

static/app/components/onboardingWizard/sidebar.tsx

@@ -186,6 +186,3 @@ const RingBar = styled('circle')<{
 const MotionRingBar = motion.create(RingBar);
 
 export default ProgressRing;
-
-// We export components to allow for css selectors
-export {RingBackground, RingBar, Text as RingText};