plugins/cmp: remove nvim-cmp deprecations warnings

These deprecations were introduced in February 2021 with a planned
removal in June 2024. These deprecated options have been in place
long enough for users to migrate to the new configuration format.

Author: HeitorAugustoLN

plugins/cmp/default.nix

@@ -55,9 +55,6 @@ lib.nixvim.neovim-plugin.mkNeovimPlugin {
   '';
 
   imports = [
-    # Introduced on 2024 February 21
-    # TODO: remove ~June 2024
-    ./deprecations.nix
     ./auto-enable.nix
     ./sources
   ];