deprecate blip controlnet pipeline.

Author: sayakpaul

src/diffusers/pipelines/controlnet/pipeline_controlnet_blip_diffusion.py

@@ -29,7 +29,7 @@
 from ..blip_diffusion.blip_image_processing import BlipImageProcessor
 from ..blip_diffusion.modeling_blip2 import Blip2QFormerModel
 from ..blip_diffusion.modeling_ctx_clip import ContextCLIPTextModel
-from ..pipeline_utils import DiffusionPipeline, ImagePipelineOutput
+from ..pipeline_utils import DeprecatedPipelineMixin, DiffusionPipeline, ImagePipelineOutput
 
 
 if is_torch_xla_available():
@@ -88,7 +88,7 @@
 """
 
 
-class BlipDiffusionControlNetPipeline(DiffusionPipeline):
+class BlipDiffusionControlNetPipeline(DeprecatedPipelineMixin, DiffusionPipeline):
     """
     Pipeline for Canny Edge based Controlled subject-driven generation using Blip Diffusion.