Remove compiler warnings

OpenRA.Editor/Surface.cs

@@ -439,10 +439,6 @@ namespace OpenRA.Editor
 			float OffsetY = t.Centered ? t.Bitmap.Height / 2 - TileSet.TileSize / 2 : 0;
 			float DrawY = TileSet.TileSize * p.Y * Zoom + Offset.Y - OffsetY;
 
-			float width = t.Bitmap.Width * Zoom;
-			float height = t.Bitmap.Height * Zoom;
-			RectangleF sourceRect = new RectangleF(0, 0, t.Bitmap.Width, t.Bitmap.Height);
-			RectangleF destRect = new RectangleF(DrawX, DrawY, width, height);
 			g.DrawRectangle(CordonPen,
 				DrawX, DrawY,
 				t.Bitmap.Width * Zoom, t.Bitmap.Height * Zoom);

OpenRA.Game/World.cs

@@ -194,7 +194,6 @@ namespace OpenRA
 			readonly World world;
 
 			public readonly Cache<Player, OwnedByCachedView> OwnedBy;
-			readonly TypeDictionary hasTrait = new TypeDictionary();
 
 			public AllQueries( World world )
 			{

OpenRA.Mods.RA/Render/RenderBuilding.cs

@@ -77,7 +77,6 @@ namespace OpenRA.Mods.RA.Render
 
 		public void PlayCustomAnimBackwards(Actor self, string name, Action a)
 		{
-			var hasSequence = anim.HasSequence(NormalizeSequence(self, name));
 			anim.PlayBackwardsThen(NormalizeSequence(self, name),
 				() => { anim.PlayRepeating(NormalizeSequence(self, "idle")); a(); });
 		}