This fixes UML's sys_call_table to delete some entries for system calls
which have not yet made it into mainline from -mm.

I also delete UML's __pud_alloc implementation since the memory.c one is
now enabled.
Signed-off-by: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>