refactor(files): remove nvim-tree and replace with mini.files for file exploration

lua/plugins/files.lua

@@ -39,25 +39,4 @@ return {
             })
         end,
     },
-    {
-        'nvim-tree/nvim-tree.lua',
-        version = '*',
-        lazy = false,
-        config = function()
-            require('nvim-tree').setup({
-                sort = {
-                    sorter = 'case_sensitive',
-                },
-                view = {
-                    width = 30,
-                },
-                renderer = {
-                    group_empty = true,
-                },
-                filters = {
-                    dotfiles = true,
-                },
-            })
-        end,
-    },
 }