fix flutter analyze problems

lib/mock/db_mock.dart

@@ -4,6 +4,7 @@ import 'package:smoke_cess_app/models/relapse.dart';
 import 'package:smoke_cess_app/models/sleep.dart';
 import 'package:smoke_cess_app/models/workout.dart';
 import 'package:smoke_cess_app/services/database_service.dart';
+// ignore: depend_on_referenced_packages
 import 'package:sqflite_common/sqlite_api.dart';
 
 class DatabaseMock implements DatabaseService {

lib/pages/interval_page.dart

@@ -1,6 +1,5 @@
 import 'package:flutter/material.dart';
 import 'package:provider/provider.dart';
-import 'package:smoke_cess_app/providers/input_provider.dart';
 import 'package:smoke_cess_app/providers/timer_provider.dart';
 import 'package:smoke_cess_app/providers/workout_provider.dart';
 import 'package:smoke_cess_app/widgets/mute_button.dart';

lib/pages/scanner_page.dart

@@ -17,15 +17,9 @@ class ScannerPage extends StatelessWidget {
     List<Mood> moods = await globals.databaseService.getMoodRecords();
     List<Sleep> sleeps = await globals.databaseService.getSleepRecords();
     List<Relapse> relapses = await globals.databaseService.getRelapseRecords();
-    for (Mood mood in moods) {
-      print(mood.toCSV());
-    }
-    for (Sleep sleep in sleeps) {
-      print(sleep.toCSV());
-    }
-    for (Relapse relapse in relapses) {
-      print(relapse.toCSV());
-    }
+    moods;
+    sleeps;
+    relapses;
   }
 
   void loadJSON(BuildContext context) async {

lib/services/database_service.dart

@@ -83,7 +83,7 @@ class DatabaseService {
     return await db.insert('relapse', relapse.toMap());
   }
 
-  String _createMoodTable = '''
+  final String _createMoodTable = '''
       CREATE TABLE IF NOT EXISTS mood(
         id INTEGER PRIMARY KEY,
         value INTEGER,
@@ -92,7 +92,7 @@ class DatabaseService {
       )
     ''';
 
-  String _createSleepTable = '''
+  final String _createSleepTable = '''
       CREATE TABLE IF NOT EXISTS sleep(
         id INTEGER PRIMARY KEY,
         value INTEGER,
@@ -105,7 +105,7 @@ class DatabaseService {
       )
     ''';
 
-  String _createRelapseTable = '''
+  final String _createRelapseTable = '''
       CREATE TABLE IF NOT EXISTS relapse(
         id INTEGER PRIMARY KEY,
         date TEXT,
@@ -114,7 +114,7 @@ class DatabaseService {
       )
     ''';
 
-  String _createWorkoutTable = '''
+  final String _createWorkoutTable = '''
       CREATE TABLE IF NOT EXISTS workout(
         id INTEGER PRIMARY KEY,
         date TEXT,

lib/services/settings_service.dart

@@ -23,13 +23,6 @@ Future<int?> getMoodQueryMinutes() => _getIntSetting('mood_query_minutes');
 Future<int?> getChessHours() => _getIntSetting('chess_hours');
 Future<int?> getChessMinutes() => _getIntSetting('chess_minutes');
 
-void _setStringSetting(String settingKey, String settingValue) =>
-    SharedPreferences.getInstance()
-        .then((pref) => pref.setString(settingKey, settingValue));
-
-Future<String?> _getStringSetting(String settingKey) =>
-    SharedPreferences.getInstance().then((pref) => pref.getString(settingKey));
-
 void _setIntSetting(String settingKey, int settingValue) =>
     SharedPreferences.getInstance()
         .then((pref) => pref.setInt(settingKey, settingValue));

lib/widgets/mood_form.dart

@@ -1,7 +1,5 @@
 import 'package:flutter/material.dart';
 import 'package:provider/provider.dart';
-import 'package:smoke_cess_app/models/mood.dart';
-import 'package:smoke_cess_app/services/database_service.dart';
 import 'package:smoke_cess_app/widgets/slider.dart';
 import 'package:smoke_cess_app/widgets/submit_form_button.dart';
 import 'package:smoke_cess_app/widgets/text_formfield.dart';