Remove test/* from API stubs jars generation.

Test: Generated old and new API stubs jars. And
cd /tmp/new/; find . -type f -name "*.class" -exec md5sum {} \+ | ( cd /tmp/old; md5sum -c --quiet )

Bug: b/70351683
Change-Id: If5e668cca483f54646fb64776b24c95044092620
1 file changed