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[Merged by Bors] - chore(Data/Seq): address porting note in terminates_parallel.aux by golfing #30603

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[Merged by Bors] - chore(Data/Seq): address porting note in terminates_parallel.aux by golfing #30603

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6 changes: 1 addition & 5 deletions Mathlib/Data/Seq/Parallel.lean
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Expand Up @@ -96,11 +96,7 @@ theorem terminates_parallel.aux :
(Sum.inr List.nil) l with a' | ls <;> erw [e] at e'
· contradiction
have := IH' m _ e
-- Porting note: `revert e'` & `intro e'` are required.
revert e'
cases destruct c <;> intro e' <;> [injection e'; injection e' with h']
rw [← h']
simp [this]
grind
rcases h : parallel.aux2 l with a | l'
· exact lem1 _ _ ⟨a, h⟩
· have H2 : corec parallel.aux1 (l, S) = think _ := destruct_eq_think (by
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