remove Convos (Unmaintained since Feb 2025) (#1991)

- ref: #1
- `ERROR:awesome_lint.py: Convos: last updated -366 days, 1:11:14.754183 ago, older than 365 days`

```
ghcr.io/convos-chat/convos:alpha (alpine 3.21.2)

Total: 72 (UNKNOWN: 0, LOW: 8, MEDIUM: 48, HIGH: 13, CRITICAL: 3)
```

software/convos.yml

@@ -1,28 +0,0 @@
-name: Convos
-website_url: https://convos.chat/
-description: Always online web IRC client.
-licenses:
-  - Artistic-2.0
-platforms:
-  - Perl
-  - Docker
-tags:
-  - Communication - IRC
-source_code_url: https://github.com/convos-chat/convos
-demo_url: https://convos.chat/#instant-demo
-stargazers_count: 1145
-updated_at: '2025-02-07'
-archived: false
-commit_history:
-  2025-03: 0
-  2025-04: 0
-  2025-05: 0
-  2025-06: 0
-  2025-07: 0
-  2025-08: 0
-  2025-09: 0
-  2025-10: 0
-  2025-11: 0
-  2025-12: 0
-  2026-01: 0
-  2026-02: 0