[lua] cleanup @:runtimeValue core abstracts (still not sure why they are always generated, but meh)

std/lua/_lua/_hx_classes.lua

@@ -1,8 +1,7 @@
 local _hxClasses = {}
-Int = (function() _hxClasses.Int = _hx_o({__fields__={__name__=true},__name__={"Int"}}); return _hxClasses.Int end)();
-Dynamic = (function() _hxClasses.Dynamic = _hx_o({__fields__={__name__=true},__name__={"Dynamic"}}); return _hxClasses.Dynamic end)();
-Float = (function() _hxClasses.Float = _hx_e(); return _hxClasses.Float end)();
-Float.__name__ = {"Float"}
+Int = _hx_e();
+Dynamic = _hx_e();
+Float = _hx_e();
 Bool = _hx_e();
-Class = (function() _hxClasses.Class = _hx_o({__fields__={__name__=true},__name__={"Class"}}); return _hxClasses.Class end)();
+Class = _hx_e();
 Enum = _hx_e();