Remove deprecated APIs and modules

Summary:
We've deprecated these APIs for quite a few releases and we should be able to get rid of them now.

Remove following deprecated modules/components
 - AppStateIOS
 - ActivityIndicatorIOS
 - IntentAndroid
 - SliderIOS
 - SwitchAndroid
 - SwitchIOS
 - LinkingIOS

Update following modules to remove callback support
 - Clipboard
 - NetInfo

cc bestander
Closes https://github.com/facebook/react-native/pull/9891

Reviewed By: bestander

Differential Revision: D3974094

Pulled By: javache

fbshipit-source-id: 9abe32716bd85d0cea9933894f4447d53bdd5ee7

Examples/UIExplorer/js/ToolbarAndroidExample.android.js

@@ -32,7 +32,7 @@ var {
 var UIExplorerBlock = require('./UIExplorerBlock');
 var UIExplorerPage = require('./UIExplorerPage');
 
-var SwitchAndroid = require('SwitchAndroid');
+var Switch = require('Switch');
 var ToolbarAndroid = require('ToolbarAndroid');
 
 class ToolbarAndroidExample extends React.Component {
@@ -67,7 +67,7 @@ class ToolbarAndroidExample extends React.Component {
             logo={require('image!launcher_icon')}
             style={styles.toolbar}>
             <View style={{height: 56, flexDirection: 'row', alignItems: 'center'}}>
-              <SwitchAndroid
+              <Switch
                 value={this.state.toolbarSwitch}
                 onValueChange={(value) => this.setState({'toolbarSwitch': value})} />
               <Text>{'\'Tis but a switch'}</Text>