[device_settings] Rename factory reset button to "Erase User Data" to
better reflect the actual functionality.

SY-913 #done

TESTED: observe string change in device settings
Change-Id: I9270563d236ac71b2054c02d4588206cb0db1a1d
diff --git a/bin/device_settings/lib/src/widget.dart b/bin/device_settings/lib/src/widget.dart
index 121432f..1ac662b 100644
--- a/bin/device_settings/lib/src/widget.dart
+++ b/bin/device_settings/lib/src/widget.dart
@@ -61,8 +61,11 @@
     scale: scale,
   );
 
+  // The factory reset button is actually closer to "Erase User Data" in
+  // functionality. This string should be reverted back to "Factory Reset" once
+  // the implementation is closer to factory reset.
   final factoryResetButton = SettingsButton(
-    text: 'Factory Reset',
+    text: 'Erase User Data',
     onTap: model.factoryReset,
     scale: scale,
   );
@@ -134,11 +137,11 @@
               physics: BouncingScrollPhysics(),
               padding: EdgeInsets.all(16.0),
               child: SettingsSection(
-                title: 'Factory Reset',
+                title: 'Erase User Data',
                 scale: scale,
                 child: Column(children: [
                   SettingsButton(
-                    text: 'Reset',
+                    text: 'Erase',
                     scale: scale,
                     onTap: model.factoryReset,
                   ),
diff --git a/lib/settings/lib/device_info.dart b/lib/settings/lib/device_info.dart
index 421e73e..c8cca9c 100644
--- a/lib/settings/lib/device_info.dart
+++ b/lib/settings/lib/device_info.dart
@@ -32,23 +32,6 @@
     return null;
   }
 
-  /// Determines whether the factory reset flag has been set.
-  ///
-  /// Completes as true if the factory reset flag is present, false otherwise.
-  static Future<bool> getFactoryResetFlag() async {
-    final completer = Completer<bool>();
-    final deviceSettingsManagerProxy = DeviceSettingsManagerProxy();
-
-    connectToService(StartupContext.fromStartupInfo().environmentServices,
-        deviceSettingsManagerProxy.ctrl);
-    deviceSettingsManagerProxy.getInteger(_factoryResetKey,
-        (int resetFlagValue, Status s) {
-      deviceSettingsManagerProxy.ctrl.close();
-      completer.complete(s == Status.ok && resetFlagValue > 0);
-    });
-    return completer.future;
-  }
-
   /// Sets a flag to determine whether the device should be reset to factory
   /// settings or not.
   ///