Remove useless LevelDB include
Remove useless LevelDB include

The tests could not compile with USE_LEVELDB=0 and LevelDB missing from the system

tackgeun/caffe,gnina/gnina,tackgeun/caffe,tackgeun/caffe,gnina/gnina,gnina/gnina,CZCV/s-dilation-caffe,CZCV/s-dilation-caffe,gnina/gnina,CZCV/s-dilation-caffe,gnina/gnina,gnina/gnina,CZCV/s-dilation-caffe,tackgeun/caffe