[PATCH] staging: erofs: drop unneeded -Wall addition

[Chao Yu]

On 2019/5/15 12:31, Masahiro Yamada wrote:
> The top level Makefile adds -Wall globally:
> 
>   KBUILD_CFLAGS   := -Wall -Wundef -Werror=strict-prototypes -Wno-trigraphs \
> 
> I see two "-Wall" added for compiling objects in drivers/staging/erofs/.
> 
> Signed-off-by: Masahiro Yamada <yamada.masahiro at socionext.com>

Reviewed-by: Chao Yu <yuchao0 at huawei.com>

Thanks,