Fix lint

Author: filonenko-mikhail

test/integration/cartridge_role_test.lua

@@ -1,9 +1,7 @@
 local fio = require('fio')
 local t = require('luatest')
-local yaml = require('yaml')
 local g = t.group()
 
-local utils = require('test.utils')
 local helpers = require('test.helper')
 
 local function set_export(export)