updating common esphome sensors

finally fixing hvac-multisensor. All of this was caused by the display switch referenced the display while it wasn't plugged in. Updated code to check for the existence first.

esphome/common/sensor/rssi_sensor.config.yaml

@@ -1,4 +1,3 @@
 platform: wifi_signal
-name: ${friendly_name} RSSI
-id: ${entity_name}_rssi
+name: RSSI
 update_interval: 60s

esphome/common/sensor/uptime_sensor.config.yaml

@@ -1,4 +1,3 @@
 platform: uptime
-name: ${friendly_name} Uptime
-id: ${entity_name}_uptime
+name: Uptime
 disabled_by_default: true