[chore] deprecate blip controlnet pipeline. (#11877)

* deprecate blip controlnet pipeline.

* last_supported_version

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.
 
@@ -116,6 +116,7 @@ class BlipDiffusionControlNetPipeline(DiffusionPipeline):
             Position of the context token in the text encoder.
     """
 
+    _last_supported_version = "0.33.1"
     model_cpu_offload_seq = "qformer->text_encoder->unet->vae"
 
     def __init__(