remove overwrite from docs

docs/tutorials/working_with_the_ensemble.ipynb

@@ -442,7 +442,8 @@
    "source": [
     "### Sampling\n",
     "\n",
-    "In addition to filtering by specific constraints, it's possible to select a subset of your data to work with. `Ensemble.sample` will randomly select a fraction of objects from the full object list. By default this will return a new ensemble."
+    "In addition to filtering by specific constraints, it's possible to select a subset of your data to work with. `Ensemble.sample` will randomly select a fraction of objects from the full object list. This will return a new\n",
+    "ensemble object to work with."
    ]
   },
   {
@@ -451,7 +452,7 @@
    "metadata": {},
    "outputs": [],
    "source": [
-    "subset_ens = ens.sample_objects(frac=0.5, overwrite=False)  # select ~half of the objects, don't overwrite ens\n",
+    "subset_ens = ens.sample_objects(frac=0.5)  # select ~half of the objects\n",
     "\n",
     "print(\"Number of pre-sampled objects: \", len(ens.object))\n",
     "print(\"Number of post-sampled objects: \", len(subset_ens.object))"