versioner: kill some obsolete versions.

Make the selection of a non-default API level non-fatal, so that we
won't have to continually fix all of the tests every time we remove an
API version.

Test: versioner
Test: python run_tests.py
Change-Id: I96429584e352f7e012c5129da3c02dc1b4b30061
diff --git a/tools/versioner/tests/preprocessor_merging/run.sh b/tools/versioner/tests/preprocessor_merging/run.sh
index 1b0aae2..1929757 100644
--- a/tools/versioner/tests/preprocessor_merging/run.sh
+++ b/tools/versioner/tests/preprocessor_merging/run.sh
@@ -1,4 +1,4 @@
 rm -rf out
 set -e
-versioner headers -i -o out
+versioner headers -a 9 -a 10 -a 11 -i -o out
 diff -q -w -B out expected