Use the standard Duration factory matcher

Summary: A new check came in over the weekend; it should use our existing infrastructure for matching `absl::Duration` factories.

Patch by hwright.

Reviewers: JonasToth

Reviewed By: JonasToth

Subscribers: astrelni

Tags: #clang-tools-extra

Differential Revision: https://reviews.llvm.org/D55541

llvm-svn: 348842