J2K: do not produce redundant "internal" words for members in an internal class

j2k/testData/fileOrElement/enum/companionObject.kt

@@ -12,7 +12,7 @@ enum class TestEnum {
 }
 
 internal class Go {
-    internal fun fn() {
+    fun fn() {
         val x = TestEnum.parse()
     }
 }

j2k/testData/fileOrElement/enum/enumConstantIsNotNull.kt

@@ -1,7 +1,7 @@
 internal enum class E {
     FOO;
 
-    internal fun foo() {
+    fun foo() {
         FOO.toString()
     }
 }