Remove flutter_runtime_env env

flutter_sentry provides the same feature. I prefer having the minimum
amount of external dependencies.

lib/app.dart

@@ -4,6 +4,8 @@ import 'dart:io';
 import 'package:device_info/device_info.dart';
 import 'package:firebase_analytics/observer.dart';
 import 'package:flutter/material.dart';
+import 'package:flutter/foundation.dart' as foundation;
+
 import 'package:gitjournal/analytics.dart';
 import 'package:gitjournal/screens/filesystem_screen.dart';
 import 'package:gitjournal/screens/folder_listing.dart';
@@ -15,7 +17,7 @@ import 'package:gitjournal/utils.dart';
 import 'package:gitjournal/utils/logger.dart';
 import 'package:provider/provider.dart';
 import 'package:path/path.dart' as p;
-import 'package:flutter_runtime_env/flutter_runtime_env.dart' as runtime_env;
+import 'package:flutter_sentry/flutter_sentry.dart';
 
 import 'package:easy_localization/easy_localization.dart';
 import 'package:easy_localization_loader/easy_localization_loader.dart';
@@ -106,7 +108,7 @@ class JournalApp extends StatefulWidget {
   }
 
   static void _enableAnalyticsIfPossible() async {
-    JournalApp.isInDebugMode = runtime_env.isInDebugMode();
+    JournalApp.isInDebugMode = foundation.kDebugMode;
 
     var isPhysicalDevice = true;
     try {
@@ -127,7 +129,7 @@ class JournalApp extends StatefulWidget {
       JournalApp.isInDebugMode = true;
     }
 
-    bool inFireBaseTestLab = await runtime_env.inFirebaseTestLab();
+    bool inFireBaseTestLab = await FlutterSentry.isFirebaseTestLab();
     bool enabled = !JournalApp.isInDebugMode && !inFireBaseTestLab;
 
     Log.d("Analytics Collection: $enabled");

pubspec.lock

@@ -284,13 +284,6 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "1.0.8"
-  flutter_runtime_env:
-    dependency: "direct main"
-    description:
-      name: flutter_runtime_env
-      url: "https://pub.dartlang.org"
-    source: hosted
-    version: "0.0.3"
   flutter_sentry:
     dependency: "direct main"
     description:

pubspec.yaml

@@ -35,7 +35,6 @@ dependencies:
   dart_git:
     git: https://github.com/GitJournal/dart_git.git
     #path: /Users/vishesh/src/gitjournal/dart_git
-  flutter_runtime_env: ^0.0.3
   yaml_serializer: ^0.0.6
   connectivity: ^0.4.6+1
   flutter_emoji: ">= 2.0.0"