[Android] Cleanup unused resources & code

Source/Android/app/src/main/java/org/dolphinemu/dolphinemu/utils/Pixels.java

@@ -1,28 +0,0 @@
-package org.dolphinemu.dolphinemu.utils;
-
-import android.content.Context;
-import android.content.res.Resources;
-import android.util.DisplayMetrics;
-
-public final class Pixels
-{
-	private Pixels()
-	{
-	}
-
-	public static float convertDpToPx(float original, Context context)
-	{
-		Resources resources = context.getResources();
-		DisplayMetrics metrics = resources.getDisplayMetrics();
-
-		return original * metrics.density;
-	}
-
-	public static float convertPxToDp(float original, Context context)
-	{
-		Resources resources = context.getResources();
-		DisplayMetrics metrics = resources.getDisplayMetrics();
-
-		return original / metrics.density;
-	}
-}