mod_mam_archive: remove invalid disco#info feature The feature which was previously added to disco#info was in fact specified to be used for stream features only (see XEP-0136 section 11). Emitting it in disco#info is weird at best and breaks stuff at worst.

---
labels:
- Stage-Alpha
rockspec:
  dependencies:
  - mod_sasl2
summary: "XEP-0386: Bind 2.0"
---

Experimental early implementation of [XEP-0386: Bind 2.0] for use with
[mod_sasl2].