home: vim: remove commenting plug-ins

Rely on the new built-in support which was added upstream as part of
v0.10.

Crucially, upstream supports using tree-sitter aware comment strings by default.

modules/home/vim/after/plugin/mappings/commentary.lua

@@ -1,10 +0,0 @@
-local wk = require("which-key")
-
-local keys = {
-    name = "Comment/uncomment",
-    c = "Current line",
-    u = "Uncomment the current and adjacent commented lines",
-    ["gc"] = "Uncomment the current and adjacent commented lines",
-}
-
-wk.register(keys, { prefix = "gc" })

modules/home/vim/default.nix

@@ -40,7 +40,6 @@ in
       lualine-lsp-progress # Show progress for LSP servers
 
       # tpope essentials
-      vim-commentary # Easy comments
       vim-eunuch # UNIX integrations
       vim-fugitive # A 'git' wrapper
       vim-git # Sane git syntax files
@@ -69,7 +68,6 @@ in
       none-ls-nvim # LSP integration for linters and formatters
       nvim-treesitter.withAllGrammars # Better highlighting
       nvim-treesitter-textobjects # More textobjects
-      nvim-ts-context-commentstring # Comment string in nested language blocks
       plenary-nvim # 'null-ls', 'telescope' dependency
 
       # Completion