Remove Nitter (unmaintained since Oct 31 2023) (#951)

- ref. #1
- `ERROR:awesome_lint.py: Nitter: last updated -378 days, 1:27:14.515509 ago, older than 365 days`

software/nitter.yml

@@ -1,15 +0,0 @@
-name: Nitter
-website_url: https://nitter.net
-description: An alternative front end to twitter.
-licenses:
-  - AGPL-3.0
-platforms:
-  - Nim
-  - Docker
-tags:
-  - Communication - Social Networks and Forums
-source_code_url: https://github.com/zedeus/nitter
-depends_3rdparty: true
-stargazers_count: 10112
-updated_at: '2023-10-31'
-archived: false