chore(docs): update pytorch colab for deprecation of anonymous mode (#615)

Its use in this notebook is inconsistent and unimportant

Author: mdlinville

colabs/pytorch/How_does_adding_dropout_affect_model_performance.ipynb

@@ -432,7 +432,7 @@
    "metadata": {},
    "outputs": [],
    "source": [
-    "wandb.init(project=\"dropout\", anonymous=\"must\")\n",
+    "wandb.init(project=\"dropout\")\n",
     "wandb.watch(net, log=\"all\")\n",
     "\n",
     "for epoch in range(8):\n",