Remove Signal connect binds

Remove the optional argument p_binds from `Object::connect` since it was deprecated by Callable.bind().
Changed all uses of it to Callable.bind()

platform/ios/display_server_ios.mm

@@ -219,7 +219,7 @@ void DisplayServerIOS::_window_callback(const Callable &p_callable, const Varian
 		const Variant *argp = &p_arg;
 		Variant ret;
 		Callable::CallError ce;
-		p_callable.call((const Variant **)&argp, 1, ret, ce);
+		p_callable.callp((const Variant **)&argp, 1, ret, ce);
 	}
 }