cleanup unused code and mixins

src/main/java/carpet/mixins/NoiseChunkGenerator_husksSpawnMixin.java

@@ -0,0 +1,49 @@
+package carpet.mixins;
+
+import carpet.CarpetSettings;
+import net.minecraft.entity.SpawnGroup;
+import net.minecraft.util.math.BlockPos;
+import net.minecraft.world.biome.Biome;
+import net.minecraft.world.biome.SpawnSettings;
+import net.minecraft.world.biome.source.BiomeSource;
+import net.minecraft.world.gen.StructureAccessor;
+import net.minecraft.world.gen.chunk.ChunkGenerator;
+import net.minecraft.world.gen.chunk.NoiseChunkGenerator;
+import net.minecraft.world.gen.chunk.StructuresConfig;
+//import net.minecraft.world.gen.feature.Feature;
+import net.minecraft.world.gen.feature.StructureFeature;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.Inject;
+import org.spongepowered.asm.mixin.injection.callback.CallbackInfoReturnable;
+
+import java.util.List;
+
+@Mixin(NoiseChunkGenerator.class)
+// todo rename mixin after 1.15 is gone
+public abstract class NoiseChunkGenerator_husksSpawnMixin extends ChunkGenerator
+{
+    public NoiseChunkGenerator_husksSpawnMixin(BiomeSource biomeSource, StructuresConfig structuresConfig)
+    {
+        super(biomeSource, structuresConfig);
+    }
+
+    @Inject(method = "getEntitySpawnList", at = @At("HEAD"), cancellable = true)
+    private void isInsidePyramid(Biome biome, StructureAccessor accessor, SpawnGroup group, BlockPos pos, CallbackInfoReturnable<List<SpawnSettings.SpawnEntry>> cir)
+    {
+        if (CarpetSettings.huskSpawningInTemples && group == SpawnGroup.MONSTER)
+        {
+            if (accessor.getStructureAt(pos, true, StructureFeature.DESERT_PYRAMID).hasChildren())
+            {
+                cir.setReturnValue(StructureFeature.DESERT_PYRAMID.getMonsterSpawns());
+            }
+        }
+        if (CarpetSettings.shulkerSpawningInEndCities && SpawnGroup.MONSTER == group)
+        {
+            if (accessor.getStructureAt(pos, true, StructureFeature.END_CITY).hasChildren())
+            {
+                cir.setReturnValue(StructureFeature.END_CITY.getMonsterSpawns());
+            }
+        }
+    }
+}