Remove files that should no longer be installed

Make now exports (partial) lists of what should be installed. Those
lists are incomplete, but if something is removed from the list, we can
remove it from the filesystem so that incremental builds work better.

Test: built-in tests (m blueprint_tools)
Test: remove a module from PRODUCT_PACKAGES, see the print and file removed
Test: change the name of a cts test, see the old one removed from cts
Change-Id: I6bc14c6a5af63383ea265e97ed8b875fa51af0ed

ui/build/Android.bp

@@ -59,6 +59,7 @@ bootstrap_go_package {
         "util.go",
     ],
     testSrcs: [
+        "cleanbuild_test.go",
         "config_test.go",
         "environment_test.go",
         "util_test.go",