Lua: drop some more js specific code from Std

Starting to clean up some of the haxe classes now... Most of it is
salvageable, but there's a lot of irrelevant js conditional compilation
options to clear out.

std/lua/_std/Std.hx

@@ -91,28 +91,6 @@ import lua.Boot;
 			var Void = __feature__("Type.resolveEnum", $hxClasses["Void"] = { __ename__ : ["Void"] }, { __ename__ : ["Void"] });
 		});
 
-#if !js_es5
-		__feature__("Array.map",
-			if( Array.prototype.map == null )
-				Array.prototype.map = function(f) {
-					var a = [];
-					for( i in 0...__this__.length )
-						a[i] = f(__this__[i]);
-					return a;
-				}
-		);
-		__feature__("Array.filter",
-			if( Array.prototype.filter == null )
-				Array.prototype.filter = function(f) {
-					var a = [];
-					for( i in 0...__this__.length ) {
-						var e = __this__[i];
-						if( f(e) ) a.push(e);
-					}
-					return a;
-				}
-		);
-#end
 	}
 
 }