[Merged by Bors] - chore(CategoryTheory/Preadditive/Mat): remove an erw#38520
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yuanyi-350 wants to merge 1 commit intoleanprover-community:masterfrom
Closed
[Merged by Bors] - chore(CategoryTheory/Preadditive/Mat): remove an erw#38520yuanyi-350 wants to merge 1 commit intoleanprover-community:masterfrom
yuanyi-350 wants to merge 1 commit intoleanprover-community:masterfrom
