Fix IDE0055

This rule no longer appears to be buggy, so enforce it. Some of the automated fixes are adjusted in order to improve the result. #pragma directives have no option to control indentation, so remove them where possible.

OpenRA.Mods.Common/UtilityCommands/ConvertSpriteToPngCommand.cs

@@ -79,9 +79,7 @@ namespace OpenRA.Mods.Common.UtilityCommands
 				}
 
 				var png = new Png(pngData, SpriteFrameType.Indexed8, frameSize.Width, frameSize.Height, palColors);
-				#pragma warning disable SA1003
 				png.Save($"{prefix}-{count++:D4}.png");
-				#pragma warning restore SA1003
 			}
 
 			Console.WriteLine("Saved {0}-[0..{1}].png", prefix, count - 1);