Fix logic in train CLI timing eval on GPU (#5387)
Fix logic in train CLI timing eval on GPU (#5387)

Run CPU timing in first iteration only
spacy-io/spaCy,explosion/spaCy,spacy-io/spaCy,honnibal/spaCy,explosion/spaCy,spacy-io/spaCy,explosion/spaCy,spacy-io/spaCy,spacy-io/spaCy,honnibal/spaCy,explosion/spaCy,spacy-io/spaCy,honnibal/spaCy,explosion/spaCy,honnibal/spaCy,explosion/spaCy