target/ppc/mmu_common.c: Remove single use local variable

The ptem variable in ppc6xx_tlb_pte_check() is used only once,
simplify by removing it as the value is already clear itself without
adding a local name for it.

Signed-off-by: BALATON Zoltan <balaton@eik.bme.hu>
Reviewed-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
1 file changed