clang-format: don't sort using declarations

Our clang-format-5.0.0 does sorting in a way different to clang-format
from git, so prepare for that unwanted change now.

There are two differences:

- newer clang-format does uniq sort
- the ordering also differs, e.g. 'librevenge::RVNGInputStream' used to
be ordered before 'librevenge::RVNG_SEEK_CUR', now it's ordered after
that

Turning the sorting off is always possible, i.e. running
solenv/clang-format/reformat-formatted-files after this change results
in no changes.

Change-Id: I146874d4d5a9ad1c45826285fdc798fec77d6ade
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/89480
Tested-by: Jenkins
Reviewed-by: Miklos Vajna <vmiklos@collabora.com>

0 files changed, 0 insertions, 0 deletions