Remove custom grep function

after/plugin/telescope.lua

@@ -1,16 +1,5 @@
 local builtin = require('telescope.builtin')
 vim.keymap.set('n', '<leader>ff', builtin.find_files, {})
 
-vim.keymap.set('n', '<leader>fs', function()
-    local searchstring
-    vim.ui.input({ prompt = 'Grep: ' }, function(input)
-        searchstring = input
-    end);
-
-    if (searchstring == nil or searchstring == '') then
-        return
-    end
-    builtin.grep_string({ search = searchstring });
-end)
-
+vim.keymap.set('n', '<leader>fs', builtin.live_grep);
 vim.keymap.set('v', '<leader>fs', builtin.grep_string);