Merge boxWithStdlib testData into box, delete BoxWithStdlib test

compiler/testData/codegen/box/reflection/call/jvmStatic.kt

@@ -0,0 +1,19 @@
+// WITH_REFLECT
+
+object Obj {
+    @JvmStatic
+    fun foo() {}
+}
+
+class C {
+    companion object {
+        @JvmStatic
+        fun bar() {}
+    }
+}
+
+fun box(): String {
+    (Obj::class.members.single { it.name == "foo" }).call(Obj)
+    (C.Companion::class.members.single { it.name == "bar" }).call(C.Companion)
+    return "OK"
+}