plugins/deprecation: remove gruvbox-material deprecation

Signed-off-by: saygo-png <[email protected]>

Author: saygo-png

plugins/deprecation.nix

@@ -23,12 +23,6 @@ let
       It is recommended to use `plugins.pckr` or `plugins.lazy` instead.
     '';
   };
-  renamed.colorschemes = {
-    # Added 2025-08-06
-    # NOTE: The old name is not in a stable version and was only in unstable for a few weeks,
-    # so we can remove this alias more quickly than usual.
-    gruvbox-material = "gruvbox-material-nvim";
-  };
   renamed.plugins = {
     # Added 2024-09-17
     surround = "vim-surround";