Refactor I2C configuration by consolidating to a single main I2C bus and updating battery sensor to use it

esphome/ha-remote/ha-remote-1.base.yaml

@@ -3,14 +3,10 @@ psram:
   speed: 80MHz
 
 i2c:
-  - id: i2c_main
-    sda: 8
-    scl: 9
-    frequency: 400kHz
-  - id: i2c_battery
-    sda: 40  # Verify these pins are free on your board
-    scl: 41
-    frequency: 400kHz
+  id: i2c_main
+  sda: 8
+  scl: 9
+  frequency: 400kHz
 
 # CH422G I/O expander (Waveshare uses it for LCD reset/backlight/touch reset)
 ch422g:
@@ -89,7 +85,7 @@ touchscreen:
   platform: gt911
   id: touch_panel
   i2c_id: i2c_main
-  update_interval: 120ms
+  interrupt_pin: 4
   reset_pin:
     ch422g: ch422g_hub
     number: 1
@@ -141,7 +137,7 @@ font:
 sensor:
   - platform: max17043
     id: max17048_battery
-    i2c_id: i2c_battery
+    i2c_id: i2c_main
     update_interval: 120s
     battery_voltage:
       name: "Remote Battery Voltage"