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

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

test.ipynb

@@ -2,25 +2,9 @@
  "cells": [
   {
    "cell_type": "code",
-   "execution_count": 1,
+   "execution_count": null,
    "metadata": {},
-   "outputs": [
-    {
-     "data": {
-      "application/vnd.jupyter.widget-view+json": {
-       "model_id": "62523899b8f64b8796b9dbb8d93c2ece",
-       "version_major": 2,
-       "version_minor": 0
-      },
-      "text/plain": [
-       "HBox(children=(Output(), VBox(children=(HBox(children=(Button(description='Fit', style=ButtonStyle()), ToggleB…"
-      ]
-     },
-     "execution_count": 1,
-     "metadata": {},
-     "output_type": "execute_result"
-    }
-   ],
+   "outputs": [],
    "source": [
     "%config InlineBackend.figure_formats = ['svg']\n",
     "from iminuit import cost\n",
@@ -51,13 +35,6 @@
     "\n",
     "m.interactive()"
    ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": null,
-   "metadata": {},
-   "outputs": [],
-   "source": []
   }
  ],
  "metadata": {