refactor(nvim): simplify std_condition for statuscolumn

dots/.config/nvim/lua/plugins/configs/statuscol.lua

@@ -25,15 +25,7 @@ return {
             })
 
             local std_condition = function(args)
-                local buf_opt = function(option_name)
+                return #vim.api.nvim_get_option_value("bufhidden", { buf = args.buf }) == 0
-                    local value = vim.api.nvim_get_option_value(option_name, { buf = args.buf })
-                    if value == "" then
-                        return nil
-                    else
-                        return value
-                    end
-                end
-                return (not buf_opt("bufhidden"))
             end
 
             return {