Remove unused Require Even (Even has been removed from stdlib in 8.19) #2592

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1 error and 10 warnings

Universe instance length is 2 but should be 3.

The '%' scope delimiter in 'Arguments' commands is deprecated, use

Tactic Notation revert dependent (hyp) is deprecated since 8.18.

The '%' scope delimiter in 'Arguments' commands is deprecated, use

Notation "_ =1 _" was already used in scope type_scope.

Notation "_ =2 _" was already used in scope type_scope.

Overwriting previous delimiting key B in scope bool_scope

Notation "_ =1 _" was already used in scope type_scope.