Removed unnecessary vector from tensor
Removed unnecessary vector from tensor


Former-commit-id: 0e49e1db7f0090ae2bf0f3488d13653cc6d8f0c4
danielhers/dynet,danielhers/dynet,shuheik/dynet,xunzhang/dynet,chunyang-wen/dynet,clab/dynet,clab/cnn,danielhers/dynet,chunyang-wen/dynet,shuheik/dynet,chunyang-wen/dynet,clab/dynet,xunzhang/dynet,clab/dynet,shuheik/dynet,clab/dynet,danielhers/dynet,clab/dynet,clab/cnn,shuheik/dynet,chunyang-wen/dynet,shuheik/dynet,danielhers/dynet,xunzhang/dynet,shuheik/dynet,shuheik/dynet,danielhers/dynet,clab/dynet,danielhers/dynet,clab/dynet,xunzhang/dynet,clab/cnn