fix(gallery): do not attempt to delete duplicate files #5031

Job	Run time
tests-diffusers	1m 56s
tests-coqui	2m 27s
tests-openvoice	3m 31s
tests-parler-tts	3m 6s
tests-rerankers	2m 14s
tests-sentencetransformers	2m 15s
tests-transformers	1m 54s
tests-transformers-musicgen	2m 41s
tests-vallex	3m 16s
	23m 20s

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