Implement Members: Do not generate 'header' keyword

#KT-18466 Fixed

idea/testData/quickfix/implement/doNotAddHeader.kt

@@ -0,0 +1,9 @@
+// "Implement members" "true"
+// WITH_RUNTIME
+// ERROR: Header declaration 'InterfaceWithFuns' has no implementation in module light_idea_test_case for JVM
+header interface InterfaceWithFuns {
+    fun funInInterface()
+}
+
+class <caret>ChildOfInterface : InterfaceWithFuns{
+}