[PATCH] powerpc/mm: Remove very old comment in hash-4k.h

[Michael Ellerman]

This comment talks about PTEs being 64-bits and PMD/PGD being 32-bits,
but that hasn't been true since 2005 when David Gibson implemented
4-level page tables in the commit titled "Four level pagetables for
ppc64".

Remove it.

Signed-off-by: Michael Ellerman <mpe at ellerman.id.au>
---

See:
  https://github.com/mpe/linux-fullhistory/commit/e28f7faf05159f1cfd564596f5e6178edba6bd49#diff-0adfdefb64f0f0ef306be06ce7f953ebL128
---
 arch/powerpc/include/asm/book3s/64/hash-4k.h | 6 +-----
 1 file changed, 1 insertion(+), 5 deletions(-)

diff --git a/arch/powerpc/include/asm/book3s/64/hash-4k.h b/arch/powerpc/include/asm/book3s/64/hash-4k.h
index 15bc16b1dc9c..cf5ba5254299 100644
--- a/arch/powerpc/include/asm/book3s/64/hash-4k.h
+++ b/arch/powerpc/include/asm/book3s/64/hash-4k.h
@@ -1,11 +1,7 @@
 /* SPDX-License-Identifier: GPL-2.0 */
 #ifndef _ASM_POWERPC_BOOK3S_64_HASH_4K_H
 #define _ASM_POWERPC_BOOK3S_64_HASH_4K_H
-/*
- * Entries per page directory level.  The PTE level must use a 64b record
- * for each page table entry.  The PMD and PGD level use a 32b record for
- * each entry by assuming that each entry is page aligned.
- */
+
 #define H_PTE_INDEX_SIZE  9
 #define H_PMD_INDEX_SIZE  7
 #define H_PUD_INDEX_SIZE  9
-- 
2.17.2