Use a different saner syntax for pcall

takes less lines, looks much better

remove neoscroll.lua, missed in 2952f4d5c7

lua/plugins/bufferline.lua

@@ -1,14 +1,8 @@
 local global_theme = "themes/" .. vim.g.nvchad_theme
 local colors = require(global_theme)
 
-local bufferline
-if
-    not pcall(
-        function()
-            bufferline = require "bufferline"
-        end
-    )
- then
+local present, bufferline = pcall(require, "bufferline")
+if not present then
     return
 end