git: Wipe up gcc34 remains via 'make upgrade'.

[Thomas Nikolajsen]

>commit 91bd2318c4d61eb906ab3b8f0b84c1706e20288c
>Author: Sascha Wildner <saw at online.de>
>Date:   Tue Aug 25 18:56:11 2009 +0200
>
>    Wipe up gcc34 remains via 'make upgrade'.
>..
>+TO_REMOVE+=/usr/share/mk/bsd.cpu.gcc41.mk

This should be `bsd.cpu.gcc34.mk'.

 -thomas
(can't commit it myself ATM)