remove gate (#9130)

src/lib/statsig/gates.ts

···
   | 'remove_show_latest_button'
   | 'test_gate_1'
   | 'test_gate_2'
-  | 'welcome_modal'

src/view/shell/index.web.tsx

···
 import {useIntentHandler} from '#/lib/hooks/useIntentHandler'
 import {useWebMediaQueries} from '#/lib/hooks/useWebMediaQueries'
 import {type NavigationProp} from '#/lib/routes/types'
-import {useGate} from '#/lib/statsig/statsig'
 import {useGeolocationStatus} from '#/state/geolocation'
 import {useIsDrawerOpen, useSetDrawerOpen} from '#/state/shell'
 import {useComposerKeyboardShortcut} from '#/state/shell/composer/useComposerKeyboardShortcut'
···
   const [showDrawerDelayedExit, setShowDrawerDelayedExit] = useState(showDrawer)
   const {state: policyUpdateState} = usePolicyUpdateContext()
   const welcomeModalControl = useWelcomeModal()
-  const gate = useGate()
 
   useLayoutEffect(() => {
     if (showDrawer !== showDrawerDelayedExit) {
···
       <LinkWarningDialog />
       <Lightbox />
 
-      {/* Show welcome modal if the gate is enabled */}
-      {welcomeModalControl.isOpen && gate('welcome_modal') && (
+      {welcomeModalControl.isOpen && (
         <WelcomeModal control={welcomeModalControl} />
       )}