Remove unnecessary comment

A whole chunk of code, to be precise. I'm always railing about whole
chunks of commented out code with my coworkers, and here I am leaving
it on my main branch. Tisk.

Author: aaronik

lua/treewalker/operations.lua

@@ -19,18 +19,6 @@ function M.highlight(range, duration, hl_group)
     vim.api.nvim_buf_add_highlight(0, ns_id, hl_group, row, 0, -1)
   end
 
-  -- -- This accomplishes the same thing, but filling the entire space with
-  -- -- highlight, _including empty lines_.
-  -- -- The only reason I don't want it now is because I can't figure out how
-  -- -- to get it to not extend the full width of the window.
-  -- -- Add ext marks for the range
-  -- local start_mark = vim.api.nvim_buf_set_extmark(0, ns_id, start_row, start_col, {
-  --   hl_group = hl_group,
-  --   end_row = end_row,
-  --   end_col = end_col,
-  --   hl_eol = true,
-  -- })
-
   -- Remove the highlight after delay
   vim.defer_fn(function()
     vim.api.nvim_buf_clear_namespace(0, ns_id, 0, -1)