Remove InputField (#9520)

packages/flutter/lib/src/widgets/editable_text.dart

@@ -104,14 +104,12 @@ class TextEditingController extends ValueNotifier<TextEditingValue> {
 /// movement. This widget does not provide any focus management (e.g.,
 /// tap-to-focus).
 ///
-/// Rather than using this widget directly, consider using [InputField], which
-/// adds tap-to-focus and cut, copy, and paste commands, or [TextField], which
+/// Rather than using this widget directly, consider using [TextField], which
 /// is a full-featured, material-design text input field with placeholder text,
 /// labels, and [Form] integration.
 ///
 /// See also:
 ///
-///  * [InputField], which adds tap-to-focus and cut, copy, and paste commands.
 ///  * [TextField], which is a full-featured, material-design text input field
 ///    with placeholder text, labels, and [Form] integration.
 class EditableText extends StatefulWidget {

packages/flutter/test/material/text_field_test.dart

@@ -640,7 +640,7 @@ void main() {
     expect(inputBox.hitTest(new HitTestResult(), position: inputBox.globalToLocal(newFourthPos)), isFalse);
   });
 
-  testWidgets('InputField smoke test', (WidgetTester tester) async {
+  testWidgets('TextField smoke test', (WidgetTester tester) async {
     String textFieldValue;
 
     Widget builder() {
@@ -672,7 +672,7 @@ void main() {
     await checkText('Hello World');
   });
 
-  testWidgets('InputField with global key', (WidgetTester tester) async {
+  testWidgets('TextField with global key', (WidgetTester tester) async {
     final GlobalKey textFieldKey = new GlobalKey(debugLabel: 'textFieldKey');
     String textFieldValue;