Remove async execution `nativeSyncPlayerAdvancements`;

bukkit/src/main/java/me/william278/husksync/bukkit/util/PlayerSetter.java

@@ -20,8 +20,6 @@ import org.bukkit.potion.PotionEffect;
 import org.bukkit.potion.PotionEffectType;
 
 import java.io.IOException;
-import java.time.Instant;
-import java.time.Period;
 import java.util.*;
 import java.util.logging.Level;
 
@@ -164,7 +162,6 @@ public class PlayerSetter {
                             = DataSerializer.deserializeAdvancementData(data.getSerializedAdvancements());
 
                     if (Settings.useNativeImplementation) {
-                        Bukkit.getScheduler().runTaskAsynchronously(plugin, () -> {
                         try {
                             nativeSyncPlayerAdvancements(player, advancementRecords);
                         } catch (Exception e) {
@@ -177,7 +174,6 @@ public class PlayerSetter {
                             setPlayerAdvancements(player, advancementRecords, data);
                             plugin.getLogger().log(Level.SEVERE, e.getMessage(), e);
                         }
-                        });
                     } else {
                         setPlayerAdvancements(player, advancementRecords, data);
                     }
@@ -310,12 +306,9 @@ public class PlayerSetter {
                 AdvancementUtils.startProgress(playerAdvancements, advancement, nativeAdvancementProgress);
             }
         });
-
-        synchronized (playerAdvancements) {
         AdvancementUtils.ensureAllVisible(playerAdvancements); // Set all completed advancement is visible
         AdvancementUtils.markPlayerAdvancementsFirst(playerAdvancements); // Mark the sending of visible advancement as the first
     }
-    }
 
     /**
      * Update a player's advancements and progress to match the advancementData