[skip ci] Quick improvement on docs build (remove variable metadata from cells)

Author: Niels Nuyttens

docs/example_notebooks/Adjusting plots.ipynb

@@ -2,19 +2,8 @@
  "cells": [
   {
    "cell_type": "code",
-   "execution_count": 1,
    "id": "ff3d5127",
-   "metadata": {
-    "execution": {
-     "iopub.execute_input": "2022-09-06T21:36:49.193524Z",
-     "iopub.status.busy": "2022-09-06T21:36:49.193175Z",
-     "iopub.status.idle": "2022-09-06T21:36:50.856780Z",
-     "shell.execute_reply": "2022-09-06T21:36:50.856053Z"
-    },
-    "pycharm": {
-     "name": "#%%\n"
-    }
-   },
+   "metadata": {},
    "outputs": [],
    "source": [
     "import pandas as pd\n",
@@ -41,33 +30,17 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 2,
    "id": "51c744de",
-   "metadata": {
-    "execution": {
-     "iopub.execute_input": "2022-09-06T21:36:50.885118Z",
-     "iopub.status.busy": "2022-09-06T21:36:50.884746Z",
-     "iopub.status.idle": "2022-09-06T21:36:51.343081Z",
-     "shell.execute_reply": "2022-09-06T21:36:51.342193Z"
-    },
-    "pycharm": {
-     "name": "#%%\n"
-    }
-   },
+   "metadata": {},
    "outputs": [],
    "source": [
     "figure.write_image(file=f\"../_static/adjusting_plots_time_periods_indication.svg\")"
    ]
   },
   {
    "cell_type": "code",
-   "execution_count": null,
    "id": "48e60a11",
-   "metadata": {
-    "pycharm": {
-     "name": "#%%\n"
-    }
-   },
+   "metadata": {},
    "outputs": [],
    "source": []
   }