[PATCH] erofs: don't warn dedupe and fragments features anymore

[Gao Xiang]

On 2023/8/21 12:04, sunshijie wrote:
> The dedupe and fragments features has been merged for a year, it has been mostly
> stable now.

some grammer fix:

The `dedupe` and `fragments` features have been merged for a year.  They are
mostly stable now.

Thanks,
Gao Xiang