cpu_mips_irqctrl_init() function in hw/mips_timer.c is empty.
Attached patch removes it, and its callers.

(Hervé Poussineau)

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5214 c046a42c-6fe2-441c-8c8c-71466251a162