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

j2k/testData/fileOrElement/issues/kt-809-string.kt

@@ -1,20 +1,20 @@
 package demo
 
 internal class Container {
-    internal var myString = "1"
+    var myString = "1"
 }
 
 internal object One {
-    internal var myContainer = Container()
+    var myContainer = Container()
 }
 
-internal class StringContainer internal constructor(s: String)
+internal class StringContainer(s: String)
 
 internal class Test {
-    internal fun putString(s: String) {
+    fun putString(s: String) {
     }
 
-    internal fun test() {
+    fun test() {
         putString(One.myContainer.myString)
         StringContainer(One.myContainer.myString)
     }