Update GenericError.hx

removed @:
@:enum abstract is deprecated in favor of  enum abstract

src/bindx/macro/GenericError.hx

@@ -3,7 +3,7 @@ package bindx.macro;
 import haxe.macro.Context;
 import haxe.macro.Expr.Position;
 
-@:enum abstract WarnPriority(Int) to Int from Int {
+enum abstract WarnPriority(Int) to Int from Int {
     var ALL = 2;
     var INFO = 1;
     var LOW = 0;