Revert " Added example for bag groupby and foldby as requested in issue 46"

This reverts commit 589c5a4.

Author: enstenr

bag.ipynb

@@ -138,26 +138,6 @@
     "b.count().compute()  # Count total number of records"
    ]
   },
-  {
-   "cell_type": "code",
-   "execution_count": null,
-   "metadata": {},
-   "outputs": [],
-   "source": [
-    "\n",
-    "(b.groupby(lambda record:record[\"occupation\"]).map(lambda kv: ( kv[0], len(kv[1]))).compute()[:10]) # using groupby to count people in each occupation"
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": null,
-   "metadata": {},
-   "outputs": [],
-   "source": [
-    "city_counts = b.foldby(key = lambda record:record[\"address\"][\"city\"], binop = lambda acc, record:acc + 1, initial = 0 ) # using foldby to count people living by city\n",
-    "city_counts.take(10)"
-   ]
-  },
   {
    "cell_type": "markdown",
    "metadata": {},
@@ -315,7 +295,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.12.3"
+   "version": "3.9.12"
   }
  },
  "nbformat": 4,