bma: Add substitutions

bma.yaml

@@ -4,6 +4,10 @@ esphome:
   platform: ESP8266
   board: d1_mini
 
+substitutions:
+  name: bma
+  friendly_name: BMA280
+  device_name: bma280
 
 packages:
   common: !include includes/common.yaml
@@ -15,10 +19,6 @@ i2c:
     scl: D4
     scan: true
 
-button:
-  - platform: restart
-    name: "Restart BME280"
-
 sensor:
   - platform: bme280_i2c
     address: 0x76
@@ -31,7 +31,3 @@ sensor:
       name: "BME280 Humidity"
     update_interval: 300s
     i2c_id: bus_a
-  - platform: wifi_signal
-    name: "Wi-Fi Signal"
-    update_interval: 60s
-    icon: mdi:wifi