Remove some unused client capabilities and sync code (#10812)

Jellyfin.Api/Controllers/DevicesController.cs

@@ -42,16 +42,15 @@ public class DevicesController : BaseJellyfinApiController
     /// <summary>
     /// Get Devices.
     /// </summary>
-    /// <param name="supportsSync">Gets or sets a value indicating whether [supports synchronize].</param>
     /// <param name="userId">Gets or sets the user identifier.</param>
     /// <response code="200">Devices retrieved.</response>
     /// <returns>An <see cref="OkResult"/> containing the list of devices.</returns>
     [HttpGet]
     [ProducesResponseType(StatusCodes.Status200OK)]
-    public async Task<ActionResult<QueryResult<DeviceInfo>>> GetDevices([FromQuery] bool? supportsSync, [FromQuery] Guid? userId)
+    public async Task<ActionResult<QueryResult<DeviceInfo>>> GetDevices([FromQuery] Guid? userId)
     {
         userId = RequestHelpers.GetUserId(User, userId);
-        return await _deviceManager.GetDevicesForUser(userId, supportsSync).ConfigureAwait(false);
+        return await _deviceManager.GetDevicesForUser(userId).ConfigureAwait(false);
     }
 
     /// <summary>

Jellyfin.Api/Controllers/SessionController.cs

@@ -385,7 +385,6 @@ public class SessionController : BaseJellyfinApiController
     /// <param name="playableMediaTypes">A list of playable media types, comma delimited. Audio, Video, Book, Photo.</param>
     /// <param name="supportedCommands">A list of supported remote control commands, comma delimited.</param>
     /// <param name="supportsMediaControl">Determines whether media can be played remotely..</param>
-    /// <param name="supportsSync">Determines whether sync is supported.</param>
     /// <param name="supportsPersistentIdentifier">Determines whether the device supports a unique identifier.</param>
     /// <response code="204">Capabilities posted.</response>
     /// <returns>A <see cref="NoContentResult"/>.</returns>
@@ -397,7 +396,6 @@ public class SessionController : BaseJellyfinApiController
         [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] MediaType[] playableMediaTypes,
         [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] GeneralCommandType[] supportedCommands,
         [FromQuery] bool supportsMediaControl = false,
-        [FromQuery] bool supportsSync = false,
         [FromQuery] bool supportsPersistentIdentifier = true)
     {
         if (string.IsNullOrWhiteSpace(id))
@@ -410,7 +408,6 @@ public class SessionController : BaseJellyfinApiController
             PlayableMediaTypes = playableMediaTypes,
             SupportedCommands = supportedCommands,
             SupportsMediaControl = supportsMediaControl,
-            SupportsSync = supportsSync,
             SupportsPersistentIdentifier = supportsPersistentIdentifier
         });
         return NoContent();

Jellyfin.Api/Controllers/UserViewsController.cs

@@ -90,7 +90,6 @@ public class UserViewsController : BaseJellyfinApiController
 
         fields.Add(ItemFields.PrimaryImageAspectRatio);
         fields.Add(ItemFields.DisplayPreferencesId);
-        fields.Remove(ItemFields.BasicSyncInfo);
         dtoOptions.Fields = fields.ToArray();
 
         var user = _userManager.GetUserById(userId);