Move some tests from boxWithStdlib/ to box/

Move those tests which do not require neither stdlib nor reflect

compiler/testData/codegen/box/callableReference/function/classMemberFromTopLevelStringNoArgs.kt

@@ -0,0 +1,8 @@
+class A {
+    fun foo() = "OK"
+}
+
+fun box(): String {
+    val x = A::foo
+    return x(A())
+}