Remove deprecated `DownloadService` constructor

Use a non deprecated constructor that includes the option to provide a `channelDescriptionResourceId` parameter.

#minor-release

PiperOrigin-RevId: 532450975
(cherry picked from commit 173e1b94307c6b5decc29d3261fbda5da73a1263)

library/core/src/main/java/com/google/android/exoplayer2/offline/DownloadService.java

@@ -236,23 +236,6 @@ public abstract class DownloadService extends Service {
   }
   }
 
 
   /**
   /**
-   * @deprecated Use {@link #DownloadService(int, long, String, int, int)}.
-   */
-  @Deprecated
-  protected DownloadService(
-      int foregroundNotificationId,
-      long foregroundNotificationUpdateInterval,
-      @Nullable String channelId,
-      @StringRes int channelNameResourceId) {
-    this(
-        foregroundNotificationId,
-        foregroundNotificationUpdateInterval,
-        channelId,
-        channelNameResourceId,
-        /* channelDescriptionResourceId= */ 0);
-  }
-
-  /**
    * Creates a DownloadService.
    * Creates a DownloadService.
    *
    *
    * @param foregroundNotificationId The notification id for the foreground notification, or {@link
    * @param foregroundNotificationId The notification id for the foreground notification, or {@link