clean log when placing structures and features

src/main/java/carpet/mixins/ChunkMixin.java

@@ -11,6 +11,7 @@ import org.spongepowered.asm.mixin.injection.callback.CallbackInfo;
 @Mixin(Chunk.class)
 public abstract class ChunkMixin
 {
+    // failed to mixin into interface. need to mixin in two places that uses it
     @Inject(method = "markBlockForPostProcessing(Lnet/minecraft/util/math/BlockPos;)V",
         at =@At("HEAD"), cancellable = true)
     private void squashWarnings(BlockPos blockPos_1, CallbackInfo ci)