Update numpy regression sample (#1256)

Signed-off-by: Agrawal, Kush <[email protected]>

openfl-tutorials/experimental/workflow/105_Numpy_Linear_Regression_Workflow.ipynb

@@ -42,10 +42,6 @@
    "metadata": {},
    "outputs": [],
    "source": [
-    "# Below code will display the print statement output on screen as well\n",
-    "import sys\n",
-    "sys.stdout = open('/dev/stdout', 'w')\n",
-    "\n",
     "!pip install git+https://github.com/securefederatedai/openfl.git\n",
     "!pip install -r workflow_interface_requirements.txt\n",
     "!pip install matplotlib\n",
@@ -308,7 +304,7 @@
     "        self.current_round += 1\n",
     "        if self.current_round < self.rounds:\n",
     "            self.next(self.aggregated_model_validation,\n",
-    "                      foreach='collaborators', exclude=['private'])\n",
+    "                      foreach='collaborators')\n",
     "        else:\n",
     "            self.next(self.end)\n",
     "\n",