Don't implicitly pick up lint-baseline.xml

lintable modules currently pick up files named "lint-baseline.xml" to
use as the lint baseline implicitly. This is confusing because you could
end up using the baseline files in more modules than intended. Lint also
has a feature where it requests you remove unnecessary findings from the
baseline file, so something could be necessary for one module, but
unnecessary for another that accidentally picked up the baseline.

All modules that used to pick up the baseline implicitly have been
fixed to specify it explicitly already.

Fixes: 272769514
Test: Presubmits
Change-Id: Id17202e2d119b87ab82c18cb35410b93ed8d5071