remove unnecessary file

ipynb_test.ipynb

-{
- "cells": [
-  {
-   "cell_type": "code",
-   "execution_count": 6,
-   "id": "9bb11bfe-8d60-49ce-a693-fae324907b78",
-   "metadata": {},
-   "outputs": [
-    {
-     "name": "stdout",
-     "output_type": "stream",
-     "text": [
-      "5\n"
-     ]
-    }
-   ],
-   "source": [
-    "from py_test import testfunc\n",
-    "testfunc()"
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": 7,
-   "id": "4db7b70b-ed9a-4d29-9039-7ecdbec5fc85",
-   "metadata": {},
-   "outputs": [
-    {
-     "name": "stdout",
-     "output_type": "stream",
-     "text": [
-      "6\n"
-     ]
-    }
-   ],
-   "source": [
-    "from py_test import testfunc\n",
-    "testfunc()"
-   ]
-  }
- ],
- "metadata": {
-  "kernelspec": {
-   "display_name": "velle-env",
-   "language": "python",
-   "name": "velle-env"
-  },
-  "language_info": {
-   "codemirror_mode": {
-    "name": "ipython",
-    "version": 3
-   },
-   "file_extension": ".py",
-   "mimetype": "text/x-python",
-   "name": "python",
-   "nbconvert_exporter": "python",
-   "pygments_lexer": "ipython3",
-   "version": "3.8.13"
-  }
- },
- "nbformat": 4,
- "nbformat_minor": 5
-}