[PATCH] unexport phys_proc_id and cpu_core_id

EXPORT_SYMBOL's for phys_proc_id and cpu_core_id were added this year but
never used.

Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>