Remove incorrect IO flush for save-all that doesn't have flush parameter

The entire reason the if statement exists is to only flush and print when done if flag is true

This avoids /save-all from hurting as much as it was before, such as from backup plugins.

Spigot-Server-Patches/Asynchronous-chunk-IO-and-loading.patch

@@ -3055,7 +3055,7 @@ index 50135446f7..b38bc67758 100644
                  completablefuture = (CompletableFuture) this.statusFutures.get(i);
                  if (completablefuture != null) {
 diff --git a/src/main/java/net/minecraft/server/PlayerChunkMap.java b/src/main/java/net/minecraft/server/PlayerChunkMap.java
-index 7dec34cb76..d17204bd28 100644
+index 7dec34cb76..893c542f57 100644
 --- a/src/main/java/net/minecraft/server/PlayerChunkMap.java
 +++ b/src/main/java/net/minecraft/server/PlayerChunkMap.java
 @@ -0,0 +0,0 @@ public class PlayerChunkMap extends IChunkLoader implements PlayerChunk.d {
@@ -3112,14 +3112,6 @@ index 7dec34cb76..d17204bd28 100644
              PlayerChunkMap.LOGGER.info("ThreadedAnvilChunkStorage ({}): All chunks are saved", this.w.getName());
          } else {
              this.visibleChunks.values().stream().filter(PlayerChunk::hasBeenLoaded).forEach((playerchunk) -> {
-@@ -0,0 +0,0 @@ public class PlayerChunkMap extends IChunkLoader implements PlayerChunk.d {
-                 }
- 
-             });
-+            com.destroystokyo.paper.io.PaperFileIOThread.Holder.INSTANCE.flush(); // Paper - flush to preserve behavior compat with pre-async behaviour
-         }
- 
-     }
 @@ -0,0 +0,0 @@ public class PlayerChunkMap extends IChunkLoader implements PlayerChunk.d {
      protected void unloadChunks(BooleanSupplier booleansupplier) {
          GameProfilerFiller gameprofilerfiller = this.world.getMethodProfiler();

Spigot-Server-Patches/Reduce-entity-tracker-updates-on-move.patch

@@ -69,7 +69,7 @@ index e7bfbc3307..43774bc9a5 100644
      // CraftBukkit start
      public String displayName;
 diff --git a/src/main/java/net/minecraft/server/PlayerChunkMap.java b/src/main/java/net/minecraft/server/PlayerChunkMap.java
-index 10b8746ad6..8b3beed91c 100644
+index 09440fffb5..9f0b0b4270 100644
 --- a/src/main/java/net/minecraft/server/PlayerChunkMap.java
 +++ b/src/main/java/net/minecraft/server/PlayerChunkMap.java
 @@ -0,0 +0,0 @@ public class PlayerChunkMap extends IChunkLoader implements PlayerChunk.d {