remove unused dependency

mobile/pubspec.lock

@@ -538,14 +538,6 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "7.0.1"
-  file_picker:
-    dependency: "direct main"
-    description:
-      name: file_picker
-      sha256: ab13ae8ef5580a411c458d6207b6774a6c237d77ac37011b13994879f68a8810
-      url: "https://pub.dev"
-    source: hosted
-    version: "8.3.7"
   file_selector_linux:
     dependency: transitive
     description:
@@ -1249,10 +1241,10 @@ packages:
     dependency: transitive
     description:
       name: meta
-      sha256: e3641ec5d63ebf0d9b41bd43201a66e3fc79a65db5f61fc181f04cd27aab950c
+      sha256: "23f08335362185a5ea2ad3a4e597f1375e78bce8a040df5c600c8d3552ef2394"
       url: "https://pub.dev"
     source: hosted
-    version: "1.16.0"
+    version: "1.17.0"
   mime:
     dependency: transitive
     description:
@@ -1942,10 +1934,10 @@ packages:
     dependency: transitive
     description:
       name: test_api
-      sha256: "522f00f556e73044315fa4585ec3270f1808a4b186c936e612cab0b565ff1e00"
+      sha256: ab2726c1a94d3176a45960b6234466ec367179b87dd74f1611adb1f3b5fb9d55
       url: "https://pub.dev"
     source: hosted
-    version: "0.7.6"
+    version: "0.7.7"
   thumbhash:
     dependency: "direct main"
     description:

mobile/pubspec.yaml

@@ -26,7 +26,6 @@ dependencies:
   dynamic_color: ^1.8.1
   easy_localization: ^3.0.8
   ffi: ^2.1.4
-  file_picker: ^8.0.0+1
   flutter:
     sdk: flutter
   flutter_cache_manager: ^3.4.1