[tests] Migrate remote_transmitter/receiver to common bus definitions (#11325)

tests/components/tcl112/common.yaml

@@ -1,7 +1,3 @@
-remote_transmitter:
-  pin: ${pin}
-  carrier_duty_percent: 50%
-
 sensor:
   - platform: template
     id: tcl112_sensor
@@ -13,3 +9,4 @@ climate:
     supports_heat: true
     supports_cool: true
     sensor: tcl112_sensor
+    transmitter_id: xmitr