Delete obsolete code?

[Steve Meredith]

What is the general policy on removing unused obsolete code? I came 
across a function in a .js file which appears to be uncalled. Since I 
have to change that file anyway, I'd like to delete the function while 
I'm in there. Unless there is some policy reason I shouldn't.

The function in question is showManualProxyConfig() in file 
pref-proxies.js. Looks like it was orphaned when v 1.24 of 
pref-proxies.xul was checked in.