Revert "fix(mobile): Generate 1 splash screen on Android (#1443)" (#1498)

This reverts commit 00630bd4a3.

mobile/pubspec.lock

@@ -325,7 +325,7 @@ packages:
       name: flutter_launcher_icons
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.9.3"
+    version: "0.9.2"
   flutter_lints:
     dependency: "direct dev"
     description:
@@ -345,13 +345,6 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "0.14.0"
-  flutter_native_splash:
-    dependency: "direct dev"
-    description:
-      name: flutter_native_splash
-      url: "https://pub.dartlang.org"
-    source: hosted
-    version: "2.2.17"
   flutter_plugin_android_lifecycle:
     dependency: transitive
     description:
@@ -457,7 +450,7 @@ packages:
       name: html
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.15.1"
+    version: "0.15.0"
   http:
     dependency: "direct main"
     description:
@@ -480,12 +473,12 @@ packages:
     source: hosted
     version: "4.0.1"
   image:
-    dependency: "direct overridden"
+    dependency: transitive
     description:
       name: image
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "4.0.12"
+    version: "3.2.0"
   image_picker:
     dependency: "direct main"
     description:
@@ -1098,13 +1091,6 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "0.3.1"
-  universal_io:
-    dependency: transitive
-    description:
-      name: universal_io
-      url: "https://pub.dartlang.org"
-    source: hosted
-    version: "2.0.4"
   url_launcher:
     dependency: "direct main"
     description: