load_cell: Don't start sensor on startup

Also, don't report an empty status.

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>

klippy/extras/load_cell.py

@@ -11,11 +11,6 @@ class LoadCell:
     def __init__(self, config, sensor):
         self.printer = printer = config.get_printer()
         self.sensor = sensor   # must implement BulkAdcSensor
-        # startup, when klippy is ready, start capturing data
-        printer.register_event_handler("klippy:ready", self._handle_ready)
-
-    def _handle_ready(self):
-        self.sensor.add_client(self._on_sample)
 
     def _on_sample(self, msg):
         return True
@@ -23,9 +18,6 @@ class LoadCell:
     def get_sensor(self):
         return self.sensor
 
-    def get_status(self, eventtime):
-        return {}
-
 def load_config(config):
     # Sensor types
     sensors = {}