Don't require the storage read, isn't needed on Android.

Fixed #1961

Author: jamesmontemagno

Xamarin.Essentials/FilePicker/FilePicker.android.cs

@@ -11,10 +11,6 @@ public static partial class FilePicker
     {
         static async Task<IEnumerable<FileResult>> PlatformPickAsync(PickOptions options, bool allowMultiple = false)
         {
-            // we only need the permission when accessing the file, but it's more natural
-            // to ask the user first, then show the picker.
-            await Permissions.EnsureGrantedAsync<Permissions.StorageRead>();
-
             // Essentials supports >= API 19 where this action is available
             var action = Intent.ActionOpenDocument;
 

Xamarin.Essentials/MediaPicker/MediaPicker.android.cs

@@ -20,10 +20,6 @@ static Task<FileResult> PlatformPickVideoAsync(MediaPickerOptions options)
 
         static async Task<FileResult> PlatformPickAsync(MediaPickerOptions options, bool photo)
         {
-            // We only need the permission when accessing the file, but it's more natural
-            // to ask the user first, then show the picker.
-            await Permissions.EnsureGrantedAsync<Permissions.StorageRead>();
-
             var intent = new Intent(Intent.ActionGetContent);
             intent.SetType(photo ? FileSystem.MimeTypes.ImageAll : FileSystem.MimeTypes.VideoAll);