haskell: remove obsolete overrides

[svmhdvn]

Motivation for this change

Removing obsolete overrides listed by #86500:

• blank-canvas
• tdigest
• esqueleto
• rank2classes
• HaTeX
• classy-prelude-yesod
• vector
• euler
• snappy-framing
• stm-conduit
• asn1-encoding
• geodetics
• aeson
• lzma
• BNFC
• serversession

Waiting on upstream for PR/hackage push:

• cabal-helper

Non-obsolete overrides

• serialport: can't remove dontCheck because the test suite needs additional arguments

Things done

• Tested using sandboxing (nix.useSandbox on NixOS, or option sandbox in nix.conf on non-NixOS linux)
• Built on platform(s)
  • NixOS
  • macOS
  • other Linux distributions
• Tested via one or more NixOS test(s) if existing and applicable for the change (look inside nixos/tests)
• Tested compilation of all pkgs that depend on this change using nix-shell -p nixpkgs-review --run "nixpkgs-review wip"
• Tested execution of all binary files (usually in ./result/bin/)
• Determined the impact on package closure size (by running nix path-info -S before and after)
• Ensured that relevant documentation is up to date
• Fits CONTRIBUTING.md.

[svmhdvn]

@cdepillabout I will be doing more work on this in the coming days. Would this be better to split up into multiple PRs, perhaps one PR per override removal? Or would you prefer it to be in one large PR?

[cdepillabout]

@svmhdvn Thanks for working on this!

Would this be better to split up into multiple PRs, perhaps one PR per override removal? Or would you prefer it to be in one large PR?

It doesn't really matter, but it is generally easier to review PRs that affect less packages.

However, sending one PR per package is somewhat annoying for the person creating PRs, so maybe 3 to 5 overrides per PR is a good compromise?

[svmhdvn]

Sounds good, I'll split it up accordingly.