arch/ppc64/kernel/sys_ppc32.c has a getname32 function.  The only
difference between it and getname() is that it calls do_getname32()
instead of do_getname() (see fs/namei.c).  The difference between
do_getname and do_getname32 is that the former checks to make sure that
the pointer it is passed is less that TASK_SIZE and restricts the length
copied to the lesser of PATH_MAX and (TASK_SIZE - pointer).
do_getname32 uses PAGE_SIZE instead of PATH_MAX.

Anton Blanchard says it is OK to remove getname32.

arch/ia64/ia32/sys_ia32.c defined a getname32(), but nothing used it.

This patch removes both.