Revert "Gopath to travis build dir."

This reverts commit ae213f6795db6a1c8d6256bb51881f9696bdadc4.
Revert "Added some go dependencies manually."

This reverts commit 54a6c0aab9e75048e523d6ddc17292cfb4f21bf5.
Revert "Trying with language: java and running go test manually."

This reverts commit 8ad736c7cea5d9142b59563dc999a19bb18dc749.