Update 4-GPU.py

tutorial/python/4-GPU.py

@@ -30,9 +30,6 @@ index.add(xb)                  # add vectors to the index
 print(index.ntotal)
 
 k = 4                          # we want to see 4 nearest neighbors
-D, I = index.search(xb[:5], k) # sanity check
-print(I)
-print(D)
 D, I = index.search(xq, k)     # actual search
 print(I[:5])                   # neighbors of the 5 first queries
 print(I[-5:])                  # neighbors of the 5 last queries