Remove use of is_trivially_constructible.

type_traits header in libstdc++ 4.8 does not define is_trivially_contructible
so the code doesn't compile with it.

In this file we are using the trait for assertion to provide a better
error message. Removing it doesn't change the meaning of the code.

Differential Revision: http://reviews.llvm.org/D20719

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@270957 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed