Remove dart:html from pubspec

frontend/pubspec.lock

@@ -41,14 +41,6 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "1.17.2"
-  csslib:
-    dependency: transitive
-    description:
-      name: csslib
-      sha256: "706b5707578e0c1b4b7550f64078f0a0f19dec3f50a178ffae7006b0a9ca58fb"
-      url: "https://pub.dev"
-    source: hosted
-    version: "1.0.0"
   cupertino_icons:
     dependency: "direct main"
     description:
@@ -120,14 +112,6 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "0.7.0"
-  html:
-    dependency: "direct main"
-    description:
-      name: html
-      sha256: "3a7812d5bcd2894edf53dfaf8cd640876cf6cef50a8f238745c8b8120ea74d3a"
-      url: "https://pub.dev"
-    source: hosted
-    version: "0.15.4"
   http:
     dependency: "direct main"
     description:

frontend/pubspec.yaml

@@ -39,7 +39,6 @@ dependencies:
   provider: ^6.0.5
   http: ^1.1.0
   shared_preferences: ^2.2.1
-  dart:html: any
 
 dev_dependencies:
   flutter_test: