Remove redundant props from Picker

Summary: Props are being ignored on native side, let's get rid of them.

Reviewed By: TheSavior

Differential Revision: D17765185

fbshipit-source-id: d3625dd25d2e41a49e701d54fe9a7b74cd47786c

Author: sammy-SC

Libraries/Components/Picker/PickerIOS.ios.js

@@ -44,8 +44,6 @@ type RCTPickerIOSType = Class<
     $ReadOnly<{|
       items: $ReadOnlyArray<RCTPickerIOSItemType>,
       onChange: (event: PickerIOSChangeEvent) => void,
-      onResponderTerminationRequest: () => boolean,
-      onStartShouldSetResponder: () => boolean,
       selectedIndex: number,
       style?: ?TextStyleProp,
       testID?: ?string,
@@ -119,8 +117,6 @@ class PickerIOS extends React.Component<Props, State> {
           items={this.state.items}
           selectedIndex={this.state.selectedIndex}
           onChange={this._onChange}
-          onStartShouldSetResponder={() => true}
-          onResponderTerminationRequest={() => false}
         />
       </View>
     );

Libraries/Components/Picker/RCTPickerNativeComponent.js

@@ -35,8 +35,6 @@ type RCTPickerIOSType = Class<
     $ReadOnly<{|
       items: $ReadOnlyArray<RCTPickerIOSItemType>,
       onChange: (event: PickerIOSChangeEvent) => void,
-      onResponderTerminationRequest: () => boolean,
-      onStartShouldSetResponder: () => boolean,
       selectedIndex: number,
       style?: ?TextStyleProp,
       testID?: ?string,

Libraries/Components/Picker/__tests__/__snapshots__/Picker-test.js.snap

@@ -18,8 +18,6 @@ exports[`<Picker /> should render as <View> when mocked 1`] = `
       ]
     }
     onChange={[Function]}
-    onResponderTerminationRequest={[Function]}
-    onStartShouldSetResponder={[Function]}
     selectedIndex={0}
     style={
       Array [
@@ -51,8 +49,6 @@ exports[`<Picker /> should render as <View> when not mocked 1`] = `
       ]
     }
     onChange={[Function]}
-    onResponderTerminationRequest={[Function]}
-    onStartShouldSetResponder={[Function]}
     selectedIndex={0}
     style={
       Array [