[PATCH] D38628: Remove unneeded typename from test

[Momchil Velikov via Phabricator via cfe-commits]

chill added a comment.

FYI, there is a similar issue in  `test/std/utilities/variant/variant.helpers/variant_alternative.fail.cpp` added by the 
same commit

git hash: a12318f5ae0aae44eb17f376d3598717b45f7a5f
 "Added failing tests for index out of range for tuple_element<pair<T1,T2>> and variant_alternative<>"


https://reviews.llvm.org/D38628