Drop package facades:

- update incremental compilation tests

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

@@ -1,5 +1,5 @@
 class Usage {
     void usage() {
-        test.TestPackage.a();
+        test.AKt.a();
     }
 }

jps-plugin/testData/incremental/withJava/kotlinUsedInJava/packageFileAdded/Usage.java.new

@@ -1,6 +1,6 @@
 class Usage {
     void usage() {
-        test.TestPackage.a();
-        test.TestPackage.b();
+        test.AKt.a();
+        test.BKt.b();
     }
 }

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

@@ -9,13 +9,8 @@ src/Usage.java
 End of files
 Cleaning output files:
 out/production/module/META-INF/module.kotlin_module
-out/production/module/Usage.class
 out/production/module/test/AKt.class
-out/production/module/test/TestPackage.class
 End of files
 Compiling files:
 src/a.kt
-End of files
-Compiling files:
-src/Usage.java
 End of files