Android: Get rid of LegacyIntSetting

The only settings that were using LegacyIntSetting are now in the new
config system, so there's no reason to have LegacyIntSetting anymore.

Source/Android/app/src/main/res/values/strings.xml

@@ -6,13 +6,10 @@
     <string name="host">app</string>
     <string name="scheme">dolphinemu</string>
 
-    <!-- WARNING Do not move these controller entries AT ALL COSTS! They are indexed with ints, and an assumption
-            is made that they are placed together so that we can access them sequentially in a loop. -->
     <string name="controller_0">GameCube Controller 1</string>
     <string name="controller_1">GameCube Controller 2</string>
     <string name="controller_2">GameCube Controller 3</string>
     <string name="controller_3">GameCube Controller 4</string>
-    <!-- END WARNING -->
 
     <string name="controller_control">Control Stick</string>
     <string name="controller_c">C Stick</string>
@@ -22,23 +19,15 @@
     <string name="analog_radius">Analog Radius (High value = High sensitivity)</string>
     <string name="analog_threshold">Analog Threshold (Low value = High sensitivity)</string>
 
-    <!-- WARNING Do not move these controller entries AT ALL COSTS! They are indexed with ints, and an assumption
-            is made that they are placed together so that we can access them sequentially in a loop.
-            Wiimotes start at 4 since they are mapped to padID's 4-7 in the native code.-->
     <string name="wiimote_4">Wii Remote 1</string>
     <string name="wiimote_5">Wii Remote 2</string>
     <string name="wiimote_6">Wii Remote 3</string>
     <string name="wiimote_7">Wii Remote 4</string>
-    <!-- END WARNING -->
 
-    <!-- WARNING Do not move these controller entries AT ALL COSTS! They are indexed with ints, and an assumption
-            is made that they are placed together so that we can access them sequentially in a loop.
-            Wiimotes start at 4 since they are mapped to padID's 4-7 in the native code.-->
     <string name="wiimote_extension_4">Wii Remote Extension 1</string>
     <string name="wiimote_extension_5">Wii Remote Extension 2</string>
     <string name="wiimote_extension_6">Wii Remote Extension 3</string>
     <string name="wiimote_extension_7">Wii Remote Extension 4</string>
-    <!-- END WARNING -->
 
     <string name="wiimote_extensions">Extension</string>
     <string name="wiimote_extensions_description">Choose and bind the Wii Remote extension.</string>