Remove generated black box java codegen test

Move all testData to boxWithJava/

compiler/testData/codegen/boxWithJava/protectedStatic/funNestedStaticGenericClass.kt

@@ -0,0 +1,9 @@
+class Derived(): funNestedStaticGenericClass<String>.Inner<String>() {
+    fun test(): String {
+        return funNestedStaticGenericClass.Inner.protectedFun()!!
+    }
+}
+
+fun box(): String {
+   return Derived().test()
+}