fixed duplicated and unused imports

Author: DennisMoschina

lib/src/managers/ble_manager.dart

@@ -5,7 +5,6 @@ import 'package:flutter/foundation.dart';
 import 'package:permission_handler/permission_handler.dart';
 import 'package:universal_ble/universal_ble.dart';
 
-import 'ble_gatt_manager.dart';
 import '../../open_earable_flutter.dart';
 import '../constants.dart';
 

lib/src/managers/v2_sensor_handler.dart

@@ -3,7 +3,6 @@ import 'dart:typed_data';
 
 import '../../open_earable_flutter.dart';
 import '../constants.dart';
-import 'ble_gatt_manager.dart';
 import 'sensor_handler.dart';
 import '../utils/sensor_scheme_parser/sensor_scheme_reader.dart';
 import '../utils/sensor_value_parser/sensor_value_parser.dart';

lib/src/models/devices/cosinuss_one.dart

@@ -2,7 +2,6 @@ import 'dart:async';
 import 'dart:typed_data';
 
 import '../../../open_earable_flutter.dart';
-import '../../managers/ble_gatt_manager.dart';
 
 // For activating PPG and ACC
 final List<int> _sensorBluetoothCharacteristics = [

lib/src/models/devices/devkit.dart

@@ -1,7 +1,6 @@
 import 'dart:async';
 
 import '../../../open_earable_flutter.dart';
-import '../../managers/ble_gatt_manager.dart';
 
 class DevKit extends Wearable
     implements

lib/src/models/devices/open_earable_v1.dart

@@ -6,7 +6,6 @@ import 'package:open_earable_flutter/open_earable_flutter.dart';
 
 import '../../managers/open_earable_sensor_manager.dart';
 import '../../utils/simple_kalman.dart';
-import '../../managers/ble_gatt_manager.dart';
 
 const String _ledSetStateCharacteristic =
     "81040e7a-4819-11ee-be56-0242ac120002";

lib/src/models/devices/open_earable_v2.dart

@@ -5,7 +5,6 @@ import 'dart:typed_data';
 import 'package:open_earable_flutter/src/constants.dart';
 
 import '../../../open_earable_flutter.dart';
-import '../../managers/ble_gatt_manager.dart';
 import '../../managers/v2_sensor_handler.dart';
 import '../capabilities/sensor_configuration_specializations/sensor_configuration_open_earable_v2.dart';
 

lib/src/models/discovered_device.dart

@@ -1,7 +1,6 @@
 import 'package:open_earable_flutter/open_earable_flutter.dart';
 import 'package:universal_ble/universal_ble.dart';
 
-import '../managers/ble_gatt_manager.dart';
 
 /// Abstract factory for creating [Wearable] instances from [DiscoveredDevice]s.
 abstract class WearableFactory {