perf: cleanup

Author: zyklone4096

mod/common/src/main/java/arcnode/reshack/mod/mixin/MixinFilePackResource.java

@@ -3,13 +3,9 @@
 import arcnode.reshack.mod.ResourceHack;
 import arcnode.reshack.mod.access.ForgeAccessHack;
 import net.minecraft.server.packs.FilePackResources;
-import org.objectweb.asm.Opcodes;
-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.ModifyVariable;
-import org.spongepowered.asm.mixin.injection.Redirect;
 
 import java.io.File;
 import java.nio.file.Files;