This reverts commit 18fe6a9a

.

Because we are changing the C++ parser to clang, we won't need this
anymore.

Task-number: QTBUG-48191
Change-Id: Iacf134ab91517a0eb3e28ea6bce41f74e3c957a0
Reviewed-by: Martin Smith <martin.smith@theqtcompany.com>