Revert "Try removing timeit"

This reverts commit 6222b63.

Author: adamjstewart

docs/tutorials/transforms.ipynb

@@ -639,6 +639,7 @@
     }
    ],
    "source": [
+    "%%timeit -n 1 -r 5\n",
     "_ = transforms(get_batch_cpu())"
    ]
   },
@@ -662,6 +663,7 @@
     }
    ],
    "source": [
+    "%%timeit -n 1 -r 5\n",
     "_ = transforms_gpu(get_batch_gpu())"
    ]
   },