do not warn about visibility of interface methods: they are public

java/java-tests/testData/refactoring/pushDown/fromInterface/before/a/I.java

@@ -0,0 +1,4 @@
+package a;
+public interface I {
+  void foo();
+}

java/java-tests/testData/refactoring/pushDown/fromInterface/before/a/I1.java

@@ -0,0 +1,2 @@
+package a;
+public interface I1 extends I {}

java/java-tests/testData/refactoring/pushDown/fromInterface/before/b/B.java

@@ -0,0 +1,7 @@
+package b;
+import a.*;
+class B {
+  void f(I1 i1) {
+    i1.foo();
+  }
+}