Some cleanup
Some cleanup


Former-commit-id: be067c5d52a9bb508cb543219bb0507bedbd9cfb
chunyang-wen/dynet,shuheik/dynet,danielhers/dynet,danielhers/dynet,clab/dynet,clab/cnn,clab/dynet,clab/dynet,danielhers/dynet,shuheik/dynet,chunyang-wen/dynet,chunyang-wen/dynet,shuheik/dynet,shuheik/dynet,xunzhang/dynet,chunyang-wen/dynet,clab/cnn,danielhers/dynet,shuheik/dynet,xunzhang/dynet,clab/dynet,xunzhang/dynet,clab/cnn,danielhers/dynet,danielhers/dynet,xunzhang/dynet,clab/dynet,shuheik/dynet,shuheik/dynet,clab/dynet,danielhers/dynet,clab/dynet