Remove unused version which no longer parses due to type change (#8515)

Signed-off-by: Mike Major <mike_j_major@hotmail.com>

bundles/org.openhab.binding.amazonechocontrol/src/main/java/org/openhab/binding/amazonechocontrol/internal/jsons/JsonPlaylists.java

@@ -31,6 +31,5 @@ public class JsonPlaylists {
         public @Nullable String playlistId;
         public @Nullable String title;
         public int trackCount;
-        public int version;
     }
 }