Removed conda command to install s3fs. (#1659)

Author: pccornel

introduction_to_applying_machine_learning/deepar_chicago_traffic_violations/deepar_chicago_traffic_violations.ipynb

@@ -81,7 +81,6 @@
     "import matplotlib.pyplot as plt\n",
     "import pandas as pd\n",
     "\n",
-    "!conda install -y s3fs\n",
     "import s3fs"
    ]
   },
@@ -449,7 +448,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.6.5"
+   "version": "3.6.10"
   },
   "notice": "Copyright 2020 Amazon.com, Inc. or its affiliates. All Rights Reserved. Licensed under the Apache License, Version 2.0 (the \"License\"). You may not use this file except in compliance with the License. A copy of the License is located at http://aws.amazon.com/apache2.0/ or in the \"license\" file accompanying this file. This file is distributed on an \"AS IS\" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License."
  },