Remove making unused copy of visible chunks in ChunkMap#processUnloads

patches/server/Do-not-copy-visible-chunks.patch

@@ -117,15 +117,6 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
  
              if (playerchunk != null) {
                  this.pendingUnloads.put(j, playerchunk);
-@@ -0,0 +0,0 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider
-         }
- 
-         int l = 0;
--        ObjectIterator objectiterator = this.visibleChunkMap.values().iterator();
-+        Iterator objectiterator = this.updatingChunks.getVisibleValuesCopy().iterator(); // Paper
- 
-         while (false && l < 20 && shouldKeepTicking.getAsBoolean() && objectiterator.hasNext()) { // Paper - incremental chunk and player saving
-             if (this.saveChunkIfNeeded((ChunkHolder) objectiterator.next())) {
 @@ -0,0 +0,0 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider
          if (!this.modified) {
              return false;

patches/server/incremental-chunk-and-player-saving.patch

@@ -242,14 +242,20 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
          if (flush) {
              List<ChunkHolder> list = (List) this.visibleChunkMap.values().stream().filter(ChunkHolder::wasAccessibleSinceLastSave).peek(ChunkHolder::refreshAccessibility).collect(Collectors.toList());
 @@ -0,0 +0,0 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider
-         int l = 0;
-         ObjectIterator objectiterator = this.visibleChunkMap.values().iterator();
+         }
  
+         int l = 0;
+-        ObjectIterator objectiterator = this.visibleChunkMap.values().iterator();
+-
 -        while (l < 20 && shouldKeepTicking.getAsBoolean() && objectiterator.hasNext()) {
-+        while (false && l < 20 && shouldKeepTicking.getAsBoolean() && objectiterator.hasNext()) { // Paper - incremental chunk and player saving
-             if (this.saveChunkIfNeeded((ChunkHolder) objectiterator.next())) {
-                 ++l;
-             }
+-            if (this.saveChunkIfNeeded((ChunkHolder) objectiterator.next())) {
+-                ++l;
+-            }
+-        }
++        // Paper - incremental chunk and player saving
+ 
+     }
+ 
 @@ -0,0 +0,0 @@ public class ChunkMap extends ChunkStorage implements ChunkHolder.PlayerProvider
  
                          this.level.unload(chunk);