Drop package facades:

- update incremental compilation tests

jps-plugin/testData/incremental/withJava/kotlinUsedInJava/addOptionalParameter/JavaUsage.java

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

jps-plugin/testData/incremental/withJava/kotlinUsedInJava/addOptionalParameter/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
@@ -10,7 +9,6 @@ Cleaning output files:
 out/production/module/JavaUsage.class
 out/production/module/META-INF/module.kotlin_module
 out/production/module/test/OtherKt.class
-out/production/module/test/TestPackage.class
 End of files
 Compiling files:
 src/other.kt