Safe Delete: Move test classes and test data to refactoring directory

idea/testData/refactoring/safeDelete/deleteProperty/kotlinPropertyWithJava/implement3.java

@@ -0,0 +1,11 @@
+class B implements A, Z {
+    @Override
+    public String getFoo() {
+        return "foo";
+    }
+
+    @Override
+    public void getFoo(String value) {
+
+    }
+}