Update generate_sample_data.py
Update generate_sample_data.py

made code more clearer and more concise
wangg12/caffe,tackgeun/caffe,CZCV/s-dilation-caffe,gnina/gnina,longjon/caffe,gogartom/caffe-textmaps,longjon/caffe,longjon/caffe,tackgeun/caffe,wangg12/caffe,wangg12/caffe,gogartom/caffe-textmaps,CZCV/s-dilation-caffe,gogartom/caffe-textmaps,gogartom/caffe-textmaps,tackgeun/caffe,gnina/gnina,gnina/gnina,CZCV/s-dilation-caffe,gnina/gnina,gnina/gnina,gnina/gnina,longjon/caffe,tackgeun/caffe,CZCV/s-dilation-caffe,wangg12/caffe