Revert "Add layout transitions to the composer photo gallery on iOS (#3609)" (#3649)

This reverts commit 1a5b8b2c94.

src/view/com/composer/Composer.tsx

@@ -1,17 +1,9 @@
-import React, {
-  useCallback,
-  useEffect,
-  useLayoutEffect,
-  useMemo,
-  useRef,
-  useState,
-} from 'react'
+import React, {useCallback, useEffect, useMemo, useRef, useState} from 'react'
 import {
   ActivityIndicator,
   BackHandler,
   Keyboard,
   KeyboardAvoidingView,
-  LayoutAnimation,
   Platform,
   ScrollView,
   StyleSheet,
@@ -135,13 +127,6 @@ export const ComposePost = observer(function ComposePost({
     () => new GalleryModel(initImageUris),
     [initImageUris],
   )
-
-  useLayoutEffect(() => {
-    if (isIOS) {
-      LayoutAnimation.configureNext(LayoutAnimation.Presets.easeInEaseOut)
-    }
-  }, [gallery.size])
-
   const onClose = useCallback(() => {
     closeComposer()
   }, [closeComposer])