removing bash_completion (and zsh_completion) variants

[Christoph Iserlohn]

Am 16.04.13 01:05, schrieb Clemens Lang:
> Always installing the completion files
npm and git-core do that already. The bash_completion variant only adds an
explicit dependency (path-style) on bash_completion.
> ports with the variant might end up in the situation that the port is
> installed, but the completion files are missing, leading to the
> requirement of rebuilding those ports.
Not when the variant works as described above.
-- 
Christoph