use outliner add sneak and remove unneeded plugins

lua/plugins.lua

@@ -32,8 +32,6 @@ return require('packer').startup({function()
     opt = true,
     cmd = { 'Dispatch', 'Dispatch!' }
   }
-  -- use 'scrooloose/nerdtree'
-  -- use 'Xuyuanp/nerdtree-git-plugin'
   use 'tpope/vim-fugitive'
   use 'tpope/vim-commentary'
   use 'sheerun/vim-polyglot'
@@ -66,6 +64,7 @@ return require('packer').startup({function()
   use "hrsh7th/cmp-path"
   use 'kdheepak/cmp-latex-symbols'
   use 'nvim-treesitter/nvim-treesitter'
+  use 'simrat39/symbols-outline.nvim'
 
   use 'kyazdani42/nvim-web-devicons'
 
@@ -80,6 +79,7 @@ return require('packer').startup({function()
     },
     config = function() require'plugins/nvim-tree' end
   }
+  use 'justinmk/vim-sneak'
 end,
 config = {
   display = {