refactor: remove sentry and crowdin (#730)

We no longer use sentry and crowdin.

pubspec.yaml

@@ -10,7 +10,6 @@ environment:
   sdk: ">=2.17.5 <3.0.0"
 
 dependencies:
-  sentry_flutter: ^6.12.2
   animations: ^2.0.4
   app_installer: ^1.1.0
   collection: ^1.16.0
@@ -73,7 +72,6 @@ dependencies:
   timezone: ^0.8.0
   url_launcher: ^6.1.5
   wakelock: ^0.6.2
-  sentry_dio: ^6.12.2
   flutter_dotenv: ^5.0.2
   pub_release: ^8.0.3
   flutter_markdown: ^0.6.13
@@ -92,5 +90,4 @@ dev_dependencies:
 flutter:
   uses-material-design: true
   assets:
-    - assets/i18n/
-    - .env
+    - assets/i18n/