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Commit 2021-05-14 04:49 840db09b

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chore(category_theory/groupoid): remove unnecessary imports (#7600)

Estimated changes

Modified src/category_theory/core.lean

Modified src/category_theory/epi_mono.lean

added def category_theory.groupoid.of_trunc_split_mono

Modified src/category_theory/groupoid.lean

deleted def category_theory.groupoid.of_trunc_split_mono