.autotest in marshal-structure-1.1.1 vs .autotest in marshal-structure-2.0

@@ -1,8 +1,7 @@
 # -*- ruby -*-
 
 require 'autotest/restart'
-require 'autotest/isolate'
 
 Autotest.add_hook :initialize do |at|
   at.testlib = 'minitest/autorun'
 end