Drop package facades:

- update incremental compilation tests

jps-plugin/testData/incremental/withJava/kotlinUsedInJava/notChangeSignature/Usage.java

@@ -1,5 +1,5 @@
 public class Usage {
     public static void main(String[] args) {
-        test.TestPackage.foo();
+        test.FunKt.foo();
     }
 }

jps-plugin/testData/incremental/withJava/kotlinUsedInJava/notChangeSignature/build.log

@@ -1,7 +1,6 @@
 Cleaning output files:
 out/production/module/META-INF/module.kotlin_module
 out/production/module/test/FunKt.class
-out/production/module/test/TestPackage.class
 End of files
 Compiling files:
 src/fun.kt