Remove unused dependencies

pubspec.lock

@@ -499,20 +499,6 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "1.4.4"
-  pull_to_refresh:
-    dependency: "direct main"
-    description:
-      name: pull_to_refresh
-      url: "https://pub.dartlang.org"
-    source: hosted
-    version: "1.6.2"
-  quiver:
-    dependency: "direct main"
-    description:
-      name: quiver
-      url: "https://pub.dartlang.org"
-    source: hosted
-    version: "2.1.5"
   rxdart:
     dependency: transitive
     description:

pubspec.yaml

@@ -44,7 +44,6 @@ dependencies:
   logging: ^0.11.4
   flutter_image_compress: ^0.6.5+1
   flutter_typeahead: ^1.8.1
-  pull_to_refresh: ^1.6.2
   fluttertoast: ^4.0.1
   video_player: ^0.10.11+1
   chewie: ^0.9.10
@@ -61,7 +60,6 @@ dependencies:
   page_transition: "^1.1.7+2"
   convex_bottom_bar: ^2.6.0
   scrollable_positioned_list: ^0.1.8
-  quiver: ^2.1.5
 
 dev_dependencies:
   flutter_test: