[Driver] NFC: Remove duplicate call to getLibGccType

Reviewed By: saugustine

Differential Revision: https://reviews.llvm.org/D68380

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@373712 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed