remove renew and add from debathena-dotfiles

[broder]

The renew and add shell functions are being provided by debathena-shell-config, but they're also in /usr/athena/lib/init/{bash,csh}rc.

Since the Athena dotfiles still source the system dotfiles, there's no reason to have the functions in both places, and in fact they are currently out of sync, so we should punt them from debathena-dotfiles.

[broder]

Before somebody goes and blindly tears out the functions, I'll note that we should be sure that we're OK with when the system dotfiles get sourced vs. the Athena dotfiles, and be sure that, e.g., add is defined when we source the user's .{,bash_}environment

[tabbott]

Note that renew has a different definition between debathena-bash-config and debathena-dotfiles.

[broder]

I did notice that, and that's one of the reasons I think we should punt it from dotfiles - I'm pretty convinced that the one in bash-config is way better than the one in dotfiles.

[broder]

Fix -> proposed

[broder]

Whoops - forgot to close this, but the fix was moved into production earlier today