-pthread should be removed on MacOS builds?

I notice that every time I build git on my OS X 10.4.11 (PowerBook G4) system, I get a bunch of:

powerpc-apple-darwin8-gcc-4.0.1: unrecognized option '-pthread'

Doing a little search, I see:

http://lists.apple.com/archives/Unix-porting/2005/Mar/msg00019.html

==== The C library on Mac OS X is always thread safe (well the ones which can be thread safe and are defined to be thread safe by the POSIX standard) and always include the pthread library. ====

So I get the feeling that -pthread can be removed from the MacOS build line without any impact (except for removing those warnings).

Just something cosmetic.