Remove `better-regex` rule from recommended list

[fregante]

The rule uses a package "Published 7 years ago" https://www.npmjs.com/package/clean-regexp and it's the source of a lot of issues. Currently open:

• better-regex autofix breaks regular expression syntax: /|/g -> //g #2314
• better-regex rule breaks regex #1754
• better-regex proposes to replace [~^] with [^~] #1626
• unicorn/better-regex autofix breaks "match all" in multiline regexps  #895

Then check out regexp-tree issues

I disable it rather often, I suggest removing it from the recommended list or dropping/extracting the rule altogether.

[voxpelli]

Is the plan for better-regex to:

1. Keep it around as is
2. Keep it around and maintain it, possibly even making it recommended again in the future if it gets more reliable
3. To deprecate it and remove it in a future version

#2443 mentions eslint-plugin-regex as a better alternative, but its unclear to me what a replacement for better-regex would look like with that module.

[voxpelli]

Found typescript-eslint/typescript-eslint#9948 which seems to suggest that https://github.com/gmullerb/eslint-plugin-regex is not the correct module, its the https://github.com/ota-meshi/eslint-plugin-regexp that's a better replacement?