Make sure java completion doesn't suggest classes from builtIns

Fix an undesirable sideeffect of previous changes

idea/idea-completion/testData/injava/stdlib/List.java

@@ -0,0 +1,9 @@
+public class Testing {
+    public static void test() {
+        List<caret>
+    }
+}
+
+// EXIST: EmptyList
+// EXIST: { lookupString:List,tailText:"<E> (java.util)" }
+// ABSENT:  { lookupString:List,tailText:"<E> (kotlin.collections)" }