feat: remove custom statusline configuration file

Signed-off-by: juliano.barbosa <julianomb@gmail.com>

lua/custom/plugins/init.lua

@@ -7,14 +7,4 @@ return {
   { 'folke/trouble.nvim', event = 'VimEnter', dependencies = { 'nvim-tree/nvim-web-devicons' }, config = function()
     require('trouble').setup {}
   end },
-
-  -- Mode Manager Plugin (local)
-  {
-    dir = vim.fn.stdpath('config') .. '/lua/custom/plugins/mode_manager',
-    name = 'mode_manager',
-    event = 'VimEnter',
-    config = function()
-      require('custom.plugins.mode_manager').setup()
-    end,
-  },
 }