samsung: doze: remove screen_gestures_panel_summary

The gestures settings are the only settings on the
  main screen to contain a summary line, and it looks
  extremely out of place.

Change-Id: I2cacef71e8db204ab4380f77d9282009e0e5df03
Signed-off-by: KhasMek <Boushh@gmail.com>

doze/AndroidManifest.xml

@@ -39,9 +39,6 @@
             <meta-data
                 android:name="com.android.settings.title"
                 android:resource="@string/screen_gestures_panel_title"/>
-            <meta-data
-                android:name="com.android.settings.summary"
-                android:resource="@string/screen_gestures_panel_summary"/>
         </activity>
 
     </application>

doze/res/values/strings.xml

@@ -15,7 +15,6 @@
 
     <!-- Gesture shortcuts -->
     <string name="screen_gestures_panel_title">Gestures</string>
-    <string name="screen_gestures_panel_summary">Use gestures to perform actions</string>
 
     <string name="ambient_display_title">Ambient display</string>