Update Datasets/collab.graph_labels.mat, Datasets/enzymes.graph_labels.mat, Datasets/proteins.graph_labels.mat, Datasets/ENZYMES.mat, Datasets/PROTEINS.mat, Datasets/COLLAB.mat files

Update Datasets/CA-HepTh.txt, Datasets/CA-AstroPh.txt, Datasets/blogcatalog.txt, Datasets/flickr.txt files
Deleted CA-AstroPh.txt, CA-HepTh.txt, blogcatalog.txt, flickr.txt files