Leonardo de Moura 13c2a8ff51 chore: remove #lang lean4 header		2020-10-25 09:54:07 -07:00
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Basic.lean	chore: remove #lang lean4 header	2020-10-25 09:54:07 -07:00
Extra.lean	chore: remove #lang lean4 header	2020-10-25 09:54:07 -07:00