Revert "python311Packages.pyuavcan: add deprecation warning"

[bobby285271]

This reverts commit 7b13a35.

ofborg-eval is now failing on every PR with:

nix-env did not evaluate cleanly:
["trace: warning: pyuavcan is deprecated and will be removed in 24.05; use pycyphal instead",...]

Since CI is also failing in the original PR, let's revert for now.

Description of changes

Things done

• Built on platform(s)
  • x86_64-linux
  • aarch64-linux
  • x86_64-darwin
  • aarch64-darwin
• For non-Linux: Is sandboxing enabled in nix.conf? (See Nix manual)
  • sandbox = relaxed
  • sandbox = true
• Tested, as applicable:
  • NixOS test(s) (look inside nixos/tests)
  • and/or package tests
  • or, for functions and "core" functionality, tests in lib/tests or pkgs/test
  • made sure NixOS tests are linked to the relevant packages
• Tested compilation of all packages that depend on this change using nix-shell -p nixpkgs-review --run "nixpkgs-review rev HEAD". Note: all changes have to be committed, also see nixpkgs-review usage
• Tested basic functionality of all binary files (usually in ./result/bin/)
• 23.11 Release Notes (or backporting 23.05 Release notes)
  • (Package updates) Added a release notes entry if the change is major or breaking
  • (Module updates) Added a release notes entry if the change is significant
  • (Module addition) Added a release notes entry if adding a new NixOS module
• Fits CONTRIBUTING.md.

[bobby285271]

Example is https://gist.github.com/GrahamcOfBorg/8567ea68881aab75267374c1aafb66d8