Update Pin widget dialog UI according to mocks.

Test: Tested manually and RequestPinItemTest passed
Bug: 182982143
Bug: 182994819
Bug: 182929673
Change-Id: I905ea0c1860d28ee9fbb456ddf6abd728b65bac4
diff --git a/AndroidManifest-common.xml b/AndroidManifest-common.xml
index 4fd2e40..4e72260 100644
--- a/AndroidManifest-common.xml
+++ b/AndroidManifest-common.xml
@@ -116,8 +116,7 @@
             android:theme="@style/AppItemActivityTheme"
             android:excludeFromRecents="true"
             android:autoRemoveFromRecents="true"
-            android:exported="true"
-            android:label="@string/action_add_to_workspace" >
+            android:exported="true">
             <intent-filter>
                 <action android:name="android.content.pm.action.CONFIRM_PIN_SHORTCUT" />
                 <action android:name="android.content.pm.action.CONFIRM_PIN_APPWIDGET" />