[pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

Author: pre-commit-ci[bot]

notebooks/bokeh.ipynb

@@ -99,7 +99,6 @@
    "metadata": {},
    "outputs": [],
    "source": [
-    "import os\n",
     "from urllib.parse import urlparse\n",
     "\n",
     "url = urlparse(os.environ.get(\"VOILA_REQUEST_URL\"))\n",

notebooks/dashboard.ipynb

@@ -77,7 +77,6 @@
    "source": [
     "import numpy as np\n",
     "from bqplot import pyplot as plt\n",
-    "import bqplot\n",
     "\n",
     "fig = plt.figure( title='Line Chart')\n",
     "np.random.seed(0)\n",

notebooks/ipympl.ipynb

@@ -16,7 +16,6 @@
    "outputs": [],
    "source": [
     "%matplotlib widget\n",
-    "import ipympl\n",
     "\n",
     "import numpy as np\n",
     "import matplotlib.pyplot as plt\n",

notebooks/mimerenderers.ipynb

@@ -9,7 +9,7 @@
    "source": [
     "from IPython.display import display\n",
     "from IPython.display import (\n",
-    "    HTML, Image, Latex, Math, Markdown, SVG\n",
+    "    HTML, Image, Latex, Markdown, SVG\n",
     ")"
    ]
   },
@@ -283,7 +283,6 @@
    "outputs": [],
    "source": [
     "from IPython.display import display\n",
-    "import pandas as pd\n",
     "\n",
     "def Vega(spec):\n",
     "    bundle = {}\n",

notebooks/yaml.ipynb

@@ -7,8 +7,7 @@
    "metadata": {},
    "outputs": [],
    "source": [
-    "from IPython.display import Markdown, clear_output\n",
-    "from ipywidgets import ToggleButton, Output\n",
+    "from IPython.display import Markdown\n",
     "import json\n",
     "import yaml\n",
     "\n",