nvim: init: Drop tmux configuration for copying to system clipboard

This is not required any more with this upstream MR merged.
https://github.com/neovim/neovim/pull/20936

nvim/.config/nvim/init.lua

@@ -74,20 +74,6 @@ vim.g.matchup_surround_enabled     = 1
 -- textobj-word-column
 vim.g.textobj_wordcolumn_no_default_key_mappings = 1
 
--- See :help clipboard and https://github.com/neovim/neovim/issues/14545
-vim.g.clipboard = {
-  name = "tmux",
-  copy = {
-    ["+"] = "tmux load-buffer -w -",
-    ["*"] = "tmux load-buffer -w -"
-  },
-  paste = {
-    ["+"] = "tmux save-buffer -",
-    ["*"] = "tmux save-buffer -"
-  },
-  cache_enabled = true
-}
-
 -- No default mappings for tmux navigator
 vim.g.tmux_navigator_no_mappings    = 1
 -- Write the current buffer, but only if changed before navigating from Vim to tmux pane