The last clean_pip won't be executed
The last clean_pip won't be executed

After run_smithy gets called there is an
`exec` into the new python process, which will
mean this code won't be called anyway so lets
just remove it.

Change-Id: Iff78f7e1c7c693e75299228e4d4746177dd8d8a5

stackforge/anvil,mc2014/anvil,stackforge/anvil,mc2014/anvil