deactivate Http unit tests (issues with JS target and build servers)

tests/unit/unitstd/haxe/Http.unit.hx → tests/unit/unitstd/haxe/Http.unit2.hx

@@ -16,4 +16,4 @@ r == "error";
 #if !flash
 exc(function() haxe.Http.requestUrl("_"));
 #end
-#end
+#end