Remove all test code from box.tsx mock file

Co-authored-by: itsdouges <6801309+itsdouges@users.noreply.github.com>

Author: Copilot

packages/@triplex/server/src/ast/__tests__/__mocks__/box.tsx

@@ -24,11 +24,3 @@ export default function Box({
 export function UseBox() {
   return <Box position={[0, 0, 0]} scale={[1, 1, 1]} />;
 }
-
-class Foo { }
-
-class Foo {
-}
-
-function foo() {
-}