s390/mm: Remove bogus comment in __tlb_flush_mm()

Since commit b3e5dc4 ("s390/mm: fix local TLB flushing vs.
detach of an mm address space") __tlb_flush_mm() does not flush
local CPU, but the comment suggests it does, which is misleading.

Signed-off-by: Alexander Gordeev <[email protected]>
Acked-by: Heiko Carstens <[email protected]>
Signed-off-by: Heiko Carstens <[email protected]>

Author: Alexander Gordeev

arch/s390/include/asm/tlbflush.h

@@ -46,11 +46,6 @@ static inline void __tlb_flush_mm(struct mm_struct *mm)
 {
 	unsigned long gmap_asce;
 
-	/*
-	 * If the machine has IDTE we prefer to do a per mm flush
-	 * on all cpus instead of doing a local flush if the mm
-	 * only ran on the local cpu.
-	 */
 	preempt_disable();
 	atomic_inc(&mm->context.flush_count);
 	/* Reset TLB flush mask */