Forcefully remove troublemaking jvm files and symlinks
Forcefully remove troublemaking jvm files and symlinks

(hopefully) alleviating the need for:

- https://github.com/travis-ci/travis-build/pull/888
- https://github.com/travis-ci/travis-build/pull/889
- https://github.com/travis-ci/travis-build/pull/893
- https://github.com/travis-ci/travis-build/pull/902

and fixing:

- https://github.com/travis-ci/travis-ci/issues/6928

spurti-chopra/travis-cookbooks,spurti-chopra/travis-cookbooks,travis-ci/travis-cookbooks,ljharb/travis-cookbooks,ljharb/travis-cookbooks,ljharb/travis-cookbooks,spurti-chopra/travis-cookbooks,travis-ci/travis-cookbooks,travis-ci/travis-cookbooks