Android: Remove old rumble implementation

Source/Android/app/src/main/res/menu/menu_overlay_controls_gc.xml

@@ -19,11 +19,6 @@
         android:checkable="true"
         android:title="@string/emulation_control_joystick_rel_center"/>
 
-    <item
-        android:id="@+id/menu_emulation_rumble"
-        android:checkable="true"
-        android:title="@string/emulation_control_rumble"/>
-
     <item
         android:id="@+id/menu_emulation_reset_overlay"
         android:title="@string/emulation_touch_overlay_reset"/>

Source/Android/app/src/main/res/menu/menu_overlay_controls_wii.xml

@@ -19,11 +19,6 @@
             android:id="@+id/menu_emulation_joystick_rel_center"
             android:checkable="true"
             android:title="@string/emulation_control_joystick_rel_center"/>
-
-        <item
-            android:id="@+id/menu_emulation_rumble"
-            android:checkable="true"
-            android:title="@string/emulation_control_rumble"/>
     </group>
 
     <item