BACKPORT: erofs: get rid of unneeded GFP_NOFS

Clean up some leftovers since there is no way for EROFS to be called
again from a reclaim context.

Signed-off-by: Jingbo Xu <jefflexu@linux.alibaba.com>
Reviewed-by: Gao Xiang <hsiangkao@linux.alibaba.com>
Link: https://lore.kernel.org/r/20240124031945.130782-1-jefflexu@linux.alibaba.com


Signed-off-by: Gao Xiang <hsiangkao@linux.alibaba.com>

Bug: 375543695
Change-Id: I28ae20b3ca300caeeef49df4e42931bfe095c8fd
(cherry picked from commit 97cf5d53)
[jianan: Resolved minor conflict from utils.c to zutils.c]
Signed-off-by: Jianan Huang <huangjianan@xiaomi.com>