Travis: remove unnecessary 2nd "pip freeze"
Travis: remove unnecessary 2nd "pip freeze"

It is already done in the "install" step.

hugovk/coveragepy,hugovk/coveragepy,hugovk/coveragepy,nedbat/coveragepy,nedbat/coveragepy,hugovk/coveragepy,nedbat/coveragepy,nedbat/coveragepy,nedbat/coveragepy,hugovk/coveragepy