Remove useless method+attribute in the trainers-io test
Remove useless method+attribute in the trainers-io test

clab/dynet,shuheik/dynet,shuheik/dynet,danielhers/dynet,shuheik/dynet,shuheik/dynet,clab/cnn,clab/dynet,danielhers/dynet,shuheik/dynet,clab/cnn,danielhers/dynet,shuheik/dynet,danielhers/dynet,clab/dynet,clab/dynet,shuheik/dynet,danielhers/dynet,clab/dynet,clab/dynet,clab/cnn,clab/dynet,danielhers/dynet,danielhers/dynet