Alex Eagle 8f36fd1374 ci: remove bazel job from Travis (#22170)
This saves us an executor on Travis.

Note that we still do a bazel build on travis when we run the integration tests under e2e_2.

We expect that CircleCI is the only place we'll ever consume bazel-built artifacts.

PR Close #22170
2018-02-13 10:25:51 -08:00
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