Move callable reference diagnostic tests to non-stdlib

compiler/testData/diagnostics/tests/callableReference/property/classFromClass.kt

@@ -0,0 +1,12 @@
+// !DIAGNOSTICS:-UNUSED_VARIABLE
+
+import kotlin.reflect.*
+
+class A(var g: A) {
+    val f: Int = 0
+
+    fun test() {
+        val fRef: KMemberProperty<A, Int> = ::f
+        val gRef: KMutableMemberProperty<A, A> = ::g
+    }
+}