Removed unnecessary code in Libraries/Text/Text.js (#22132)

Summary:
I don't think it's necessary to use spread properties (prevState) in `getDerivedStateFromProps`
Pull Request resolved: https://github.com/facebook/react-native/pull/22132

Differential Revision: D12929838

Pulled By: TheSavior

fbshipit-source-id: cdc4f9df8e2f0b2878aec605478144b3e08cea89

Libraries/Text/Text.js

@@ -108,10 +108,12 @@ class TouchableText extends React.Component<Props, State> {
     responseHandlers: null,
   };
 
-  static getDerivedStateFromProps(nextProps: Props, prevState: State): ?State {
+  static getDerivedStateFromProps(
+    nextProps: Props,
+    prevState: State,
+  ): $Shape<State> | null {
     return prevState.responseHandlers == null && isTouchable(nextProps)
       ? {
-          ...prevState,
           responseHandlers: prevState.createResponderHandlers(),
         }
       : null;