nixpkgs/neovim: remove C-j and C-k mappings from picker

Prefer C-n and C-p instead as they're more standard

.config/nixpkgs/neovim/plugins.lua

@@ -4,8 +4,6 @@ require('telescope').setup({
     mappings = {
       i = {
         ['jj'] = 'close',
-        ['<C-j>'] = 'move_selection_next',
-        ['<C-k>'] = 'move_selection_previous',
       },
     },
     layout_config = {