Atorch AT4PTW: remove extra characters

Extra characters accidentally got inserted before last commit

custom_components/tuya_local/devices/atorch_at4ptw_thermostat.yaml

@@ -1,5 +1,5 @@
 name: Thermostat switch
-products:XS
+products:
   - id: mebqypa73rdhby90
     manufacturer: Atorch
     model: AT4PTW