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fbe29c62 - [refactor] create modeling blocks specific to AnimateDiff (#8979)

[refactor] create modeling blocks specific to AnimateDiff (#8979) * animatediff specific transformer model * make style * make fix-copies * move blocks to unet motion model * make style * remove dummy object * fix incorrectly passed param causing test failures * rename model and output class * fix sparsectrl imports * remove todo comments * remove temporal double self attn param from controlnet sparsectrl * add deprecated versions of blocks * apply suggestions from review * update --------- Co-authored-by: Dhruv Nair <dhruv.nair@gmail.com>