Drop chunk status transition patch from paper_chunk_patches

Research by ishland suggests that vanilla already does this, at least
since 1.18

Author: embeddedt

common/src/main/java/org/embeddedt/modernfix/common/mixin/bugfix/paper_chunk_patches/ChunkHolderMixin.java

@@ -1,29 +1,24 @@
 package org.embeddedt.modernfix.common.mixin.bugfix.paper_chunk_patches;
 
 import com.mojang.datafixers.util.Either;
-import net.minecraft.server.MinecraftServer;
 import net.minecraft.server.level.*;
 import net.minecraft.server.level.progress.ChunkProgressListener;
 import net.minecraft.util.thread.BlockableEventLoop;
 import net.minecraft.world.level.ChunkPos;
 import net.minecraft.world.level.chunk.ChunkAccess;
 import net.minecraft.world.level.chunk.ChunkStatus;
 import net.minecraft.world.level.levelgen.structure.templatesystem.StructureManager;
-import org.embeddedt.modernfix.duck.IPaperChunkHolder;
 import org.spongepowered.asm.mixin.Final;
 import org.spongepowered.asm.mixin.Mixin;
 import org.spongepowered.asm.mixin.Shadow;
 import org.spongepowered.asm.mixin.injection.At;
 import org.spongepowered.asm.mixin.injection.Inject;
 import org.spongepowered.asm.mixin.injection.ModifyArg;
-import org.spongepowered.asm.mixin.injection.Redirect;
-import org.spongepowered.asm.mixin.injection.callback.CallbackInfo;
 import org.spongepowered.asm.mixin.injection.callback.CallbackInfoReturnable;
 
 import java.util.Optional;
 import java.util.concurrent.CompletableFuture;
 import java.util.concurrent.Executor;
-import java.util.function.Function;
 
 
 @Mixin(ChunkMap.class)
@@ -41,45 +36,13 @@ public abstract class ChunkMapMixin {
 
     @Shadow protected abstract CompletableFuture<Either<ChunkAccess, ChunkHolder.ChunkLoadingFailure>> scheduleChunkGeneration(ChunkHolder chunkHolder, ChunkStatus chunkStatus);
 
-    private Executor mainInvokingExecutor;
-
-    @Inject(method = "<init>", at = @At("RETURN"))
-    private void setup(CallbackInfo ci) {
-        MinecraftServer server = this.level.getServer();
-        this.mainInvokingExecutor = (runnable) -> {
-            if(server.isSameThread())
-                runnable.run();
-            else
-                this.mainThreadExecutor.execute(runnable);
-        };
-    }
-
 
     /* https://github.com/PaperMC/Paper/blob/ver/1.17.1/patches/server/0752-Fix-chunks-refusing-to-unload-at-low-TPS.patch */
     @ModifyArg(method = "prepareAccessibleChunk", at = @At(value = "INVOKE", target = "Ljava/util/concurrent/CompletableFuture;thenApplyAsync(Ljava/util/function/Function;Ljava/util/concurrent/Executor;)Ljava/util/concurrent/CompletableFuture;"), index = 1)
     private Executor useMainThreadExecutor(Executor executor) {
         return this.mainThreadExecutor;
     }
 
-    /* https://github.com/PaperMC/Paper/blob/master/patches/removed/1.19.2-legacy-chunksystem/0482-Improve-Chunk-Status-Transition-Speed.patch */
-    @ModifyArg(method = "prepareEntityTickingChunk", at = @At(value = "INVOKE", target = "Ljava/util/concurrent/CompletableFuture;thenApplyAsync(Ljava/util/function/Function;Ljava/util/concurrent/Executor;)Ljava/util/concurrent/CompletableFuture;"), index = 1)
-    private Executor useMainInvokingExecutor(Executor executor) {
-        return this.mainInvokingExecutor;
-    }
-
-    @SuppressWarnings({"rawtypes", "unchecked"})
-    @Redirect(method = "scheduleChunkGeneration", at = @At(value = "INVOKE", target = "Ljava/util/concurrent/CompletableFuture;thenComposeAsync(Ljava/util/function/Function;Ljava/util/concurrent/Executor;)Ljava/util/concurrent/CompletableFuture;"))
-    private CompletableFuture skipWorkerIfPossible(CompletableFuture inputFuture, Function function, Executor executor, ChunkHolder holder) {
-        Executor targetExecutor = (runnable) -> {
-            if(((IPaperChunkHolder)holder).mfix$canAdvanceStatus()) {
-                this.mainInvokingExecutor.execute(runnable);
-                return;
-            }
-            executor.execute(runnable);
-        };
-        return inputFuture.thenComposeAsync(function, targetExecutor);
-    }
-
     /**
      * @author embeddedt
      * @reason revert 1.17 chunk system changes, significantly reduces time and RAM needed to load chunks