chore: delete unused nodes function

Author: giacomoaccursi

flows.json

@@ -85,7 +85,7 @@
         "type": "function",
         "z": "09012e75c72a4968",
         "name": "UpdateActuatorState",
-        "func": "let jsonData = JSON.parse(msg.payload);\n\nmsg.payload = [\n    {\n        \"op\": \"add\",\n        \"path\": jsonData[global.get(\"valueChanged\")][\"path\"],\n        \"value\": global.get(\"value\")\n    }\n]\n\n\nmsg.url = \"https://room.api.wcus.digitaltwins.azure.net/digitaltwins/\" + global.get(\"roomID\") + \"?api-version=2020-10-31\"\nmsg.method = \"patch\"\n\nreturn msg; \n\n",
+        "func": "",
         "outputs": 1,
         "noerr": 0,
         "initialize": "",
@@ -104,7 +104,7 @@
         "type": "function",
         "z": "09012e75c72a4968",
         "name": "PersonEnterExit",
-        "func": "let jsonData = JSON.parse(msg.payload);\n\nmsg.payload = [\n    {\n        \"op\": \"add\",\n        \"path\": jsonData[global.get(\"valueChanged\")][\"path\"],\n        \"value\": global.get(\"value\")\n    }\n]\n\n\nmsg.url = \"https://room.api.wcus.digitaltwins.azure.net/digitaltwins/\" + global.get(\"roomID\") + \"?api-version=2020-10-31\"\nmsg.method = \"patch\"\n\nreturn msg; \n\n",
+        "func": "\n",
         "outputs": 1,
         "noerr": 0,
         "initialize": "",
@@ -123,7 +123,7 @@
         "type": "function",
         "z": "09012e75c72a4968",
         "name": "MedicalDeviceTracking",
-        "func": "let jsonData = JSON.parse(msg.payload);\n\nmsg.payload = [\n    {\n        \"op\": \"add\",\n        \"path\": jsonData[global.get(\"valueChanged\")][\"path\"],\n        \"value\": global.get(\"value\")\n    }\n]\n\n\nmsg.url = \"https://room.api.wcus.digitaltwins.azure.net/digitaltwins/\" + global.get(\"roomID\") + \"?api-version=2020-10-31\"\nmsg.method = \"patch\"\n\nreturn msg; \n\n",
+        "func": "",
         "outputs": 1,
         "noerr": 0,
         "initialize": "",
@@ -142,7 +142,7 @@
         "type": "function",
         "z": "09012e75c72a4968",
         "name": "PatientOnOperatingTable",
-        "func": "let jsonData = JSON.parse(msg.payload);\n\nmsg.payload = [\n    {\n        \"op\": \"add\",\n        \"path\": jsonData[global.get(\"valueChanged\")][\"path\"],\n        \"value\": global.get(\"value\")\n    }\n]\n\n\nmsg.url = \"https://room.api.wcus.digitaltwins.azure.net/digitaltwins/\" + global.get(\"roomID\") + \"?api-version=2020-10-31\"\nmsg.method = \"patch\"\n\nreturn msg; \n\n",
+        "func": "",
         "outputs": 1,
         "noerr": 0,
         "initialize": "",
@@ -1188,7 +1188,7 @@
         "type": "function",
         "z": "09012e75c72a4968",
         "name": "UpdateHumidity",
-        "func": "let jsonData = JSON.parse(msg.payload);\n\nmsg.payload = [\n    {\n        \"op\": \"add\",\n        \"path\": jsonData[\"temperature\"][\"path\"],\n        \"value\": parseInt(msg.temperature_value)\n    }\n]\n\nmsg.url = \"https://room.api.wcus.digitaltwins.azure.net/digitaltwins/\"+ msg.room_id +\"?api-version=2020-10-31\"\nmsg.method = \"patch\"\n\nreturn msg; \n\n",
+        "func": "\n\n",
         "outputs": 1,
         "noerr": 0,
         "initialize": "",
@@ -1207,7 +1207,7 @@
         "type": "function",
         "z": "09012e75c72a4968",
         "name": "UpdateLuminosity",
-        "func": "let jsonData = JSON.parse(msg.payload);\n\nmsg.payload = [\n    {\n        \"op\": \"add\",\n        \"path\": jsonData[\"temperature\"][\"path\"],\n        \"value\": parseInt(msg.temperature_value)\n    }\n]\n\nmsg.url = \"https://room.api.wcus.digitaltwins.azure.net/digitaltwins/\"+ msg.room_id +\"?api-version=2020-10-31\"\nmsg.method = \"patch\"\n\nreturn msg; \n\n",
+        "func": "\n\n",
         "outputs": 1,
         "noerr": 0,
         "initialize": "",
@@ -1226,7 +1226,7 @@
         "type": "function",
         "z": "09012e75c72a4968",
         "name": "UpdatePersonInside",
-        "func": "let jsonData = JSON.parse(msg.payload);\n\nmsg.payload = [\n    {\n        \"op\": \"add\",\n        \"path\": jsonData[\"temperature\"][\"path\"],\n        \"value\": parseInt(msg.temperature_value)\n    }\n]\n\nmsg.url = \"https://room.api.wcus.digitaltwins.azure.net/digitaltwins/\"+ msg.room_id +\"?api-version=2020-10-31\"\nmsg.method = \"patch\"\n\nreturn msg; \n\n",
+        "func": "",
         "outputs": 1,
         "noerr": 0,
         "initialize": "",