powerpc/mm: Drop unused externs for hpte_init_beat[_v3]()

We removed the BEAT support in 2015 in commit bf4981a006 ("powerpc:
Remove the celleb support"). These externs are unused since then.

Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Michael Ellerman 2016-07-25 11:35:08 +10:00
commit 1a1cee843c