[PATCH for-next 2/5] erofs: remove dead code since managed cache is now built-in

[Chao Yu]

On 2019/10/8 20:56, Gao Xiang wrote:
> After commit 4279f3f9889f ("staging: erofs: turn cache
> strategies into mount options"), cache strategies are
> changed into mount options rather than old build configs.
> 
> Let's kill useless code for obsoleted build options.
> 
> Signed-off-by: Gao Xiang <gaoxiang25 at huawei.com>

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

Thanks,