remove throttle from ld2450 component config example (#5290)

Author: fabio-garavini

content/components/sensor/ld2450.md

@@ -475,7 +475,6 @@ uart:
 ld2450:
   id: ld2450_radar
   uart_id: uart_ld2450
-  throttle: 1000ms
 
 binary_sensor:
   - platform: ld2450