Move some tests from boxWithStdlib/ to box/

Move those tests which do not require neither stdlib nor reflect

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

@@ -0,0 +1,18 @@
+import kotlin.reflect.*
+
+class A {
+    val x = 1
+    fun x(): String = "OK"
+}
+
+val f1: KProperty1<A, Int> = A::x
+val f2: (A) -> String = A::x
+
+fun box(): String {
+    val a = A()
+
+    val x1 = f1.get(a)
+    if (x1 != 1) return "Fail 1: $x1"
+
+    return f2(a)
+}