rename modular_pipeline_block_mappings.py to modular_block_mapping

Author: yiyixuxu

src/diffusers/modular_pipelines/stable_diffusion_xl/modular_pipeline_block_mappings.py renamed to src/diffusers/modular_pipelines/stable_diffusion_xl/modular_block_mappings.py

@@ -106,11 +106,6 @@
     ("decode", StableDiffusionXLAutoDecodeStep)
 ])
 
-AUTO_CORE_BLOCKS = InsertableOrderedDict([
-    ("before_denoise", StableDiffusionXLAutoBeforeDenoiseStep),
-    ("denoise", StableDiffusionXLAutoDenoiseStep),
-])
-
 
 SDXL_SUPPORTED_BLOCKS = {
     "text2img": TEXT2IMAGE_BLOCKS,