'From Squeak3.4 of 1 March 2003 [latest update: #5170] on 8 April 2003 at 9:24:16 am'! SystemDictionary removeSelector: #macroBenchmark1! SystemDictionary removeSelector: #macroBenchmark2! SystemDictionary removeSelector: #macroBenchmark3! SystemDictionary removeSelector: #macroBenchmarks! SystemDictionary removeSelector: #standardTime:!