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a663a67e - [LoRA] clean up `load_lora_into_text_encoder()` and `fuse_lora()` copied from (#10495)

[LoRA] clean up `load_lora_into_text_encoder()` and `fuse_lora()` copied from (#10495) * factor out text encoder loading. * make fix-copies * remove copied from fuse_lora and unfuse_lora as needed. * remove unused imports