Revert "Set machine_extruder_count in sync with defined extruders"

This reverts commit b69f337ddb50bb8e5dc39107f75d4112b14527d1.

plugins/MachineSettingsAction/MachineSettingsAction.qml

@@ -380,10 +380,6 @@ Cura.MachineAction
                                         }
                                     }
                                     currentIndex: machineExtruderCountProvider.properties.value - 1
-                                    Component.onCompleted:
-                                    {
-                                        manager.setMachineExtruderCount(1);
-                                    }
                                     onActivated:
                                     {
                                         manager.setMachineExtruderCount(index + 1);

resources/definitions/custom.def.json

@@ -22,12 +22,5 @@
             "7": "custom_extruder_8"
         },
         "first_start_actions": ["MachineSettingsAction"]
-    },
-    "overrides":
-    {
-        "machine_extruder_count":
-        {
-            "default_value": 8
-        }
     }
 }