Revert "added low battery message"

This reverts PR https://github.com/InfiniTimeOrg/InfiniTime/pull/1352

src/systemtask/Messages.h

@@ -29,7 +29,6 @@ namespace Pinetime {
       SetOffAlarm,
       MeasureBatteryTimerExpired,
       BatteryPercentageUpdated,
-      LowBattery,
       StartFileTransfer,
       StopFileTransfer,
       BleRadioEnableToggle

src/systemtask/SystemTask.cpp

@@ -18,8 +18,6 @@
 #include "BootErrors.h"
 
 #include <memory>
-#include <algorithm>
-#include <cstring>
 
 using namespace Pinetime::System;
 
@@ -408,16 +406,6 @@ void SystemTask::Work() {
         case Messages::BatteryPercentageUpdated:
           nimbleController.NotifyBatteryLevel(batteryController.PercentRemaining());
           break;
-        case Messages::LowBattery: {
-          Pinetime::Controllers::NotificationManager::Notification notif;
-          constexpr char message[] = "Low Battery\0Charge your watch to prevent data loss.\0";
-          constexpr size_t messageSize = std::min(sizeof(message), Pinetime::Controllers::NotificationManager::MaximumMessageSize());
-          std::memcpy(notif.message.data(), message, messageSize);
-          notif.size = messageSize;
-          notif.category = Pinetime::Controllers::NotificationManager::Categories::SimpleAlert;
-          notificationManager.Push(std::move(notif));
-          PushMessage(Messages::OnNewNotification);
-        } break;
         case Messages::OnPairing:
           if (state == SystemTaskState::Sleeping) {
             GoToRunning();