beets: Remove <2.2.0 conditionals

pkgs/tools/audio/beets/builtin-plugins.nix

···
     flask-cors
   ];
   zero = { };
-}
-# NOTE: There will be no need for this conditional once beets is updated.
-// lib.optionalAttrs (lib.versionAtLeast version "2.2.0-unstable-2025-03-12") {
   _typing = {
     testPaths = [ ];
   };

pkgs/tools/audio/beets/common.nix

···
       pyyaml
       unidecode
       typing-extensions
-    ]
-    ++ lib.optionals (lib.versionAtLeast version "2.2.0-unstable-2025-03-12") [
       lap
     ]
     ++ (concatMap (p: p.propagatedBuildInputs) (attrValues enabledPlugins));
···
       mock
       rarfile
       responses
-    ]
-    ++ lib.optionals (lib.versionAtLeast version "2.2.0-unstable-2025-03-12") [
       requests-mock
     ]
     ++ [