sm6250-common: light: Remove backlight support in case of hwcomposer

Change-Id: I3005c11f57797372b45e1c0f81caa4ddcac9cc36

light/Light.cpp

@@ -22,14 +22,12 @@
 
 #include <fstream>
 
-#define LCD_LED         "/sys/class/backlight/panel0-backlight/"
 #define NOTIFICATION_LED       "/sys/class/leds/white/"
 
 #define BREATH          "breath"
 #define BRIGHTNESS      "brightness"
 
 #define MAX_LED_BRIGHTNESS    255
-#define MAX_LCD_BRIGHTNESS    4095
 
 namespace {
 /*
@@ -83,11 +81,6 @@ static inline uint32_t getScaledBrightness(const LightState& state, uint32_t max
     return scaleBrightness(getBrightness(state), maxBrightness);
 }
 
-static void handleBacklight(const LightState& state) {
-    uint32_t brightness = getScaledBrightness(state, MAX_LCD_BRIGHTNESS);
-    set(LCD_LED BRIGHTNESS, brightness);
-}
-
 static void handleNotification(const LightState& state) {
     uint32_t whiteBrightness = getScaledBrightness(state, MAX_LED_BRIGHTNESS);
 
@@ -131,7 +124,6 @@ static std::vector<LightBackend> backends = {
     { Type::ATTENTION, handleNotification },
     { Type::NOTIFICATIONS, handleNotification },
     { Type::BATTERY, handleNotification },
-    { Type::BACKLIGHT, handleBacklight },
 };
 
 static LightStateHandler findHandler(Type type) {