[PATCH v4 79/83] buildman: Move copy_files() out ot BuilderThread class

[Simon Glass]

This does not need to be in the class. Move it out to avoid a pylint
warning.

Signed-off-by: Simon Glass <sjg at chromium.org>
---

(no changes since v1)

 tools/buildman/builderthread.py | 47 +++++++++++++++++----------------
 1 file changed, 24 insertions(+), 23 deletions(-)

Applied to u-boot-dm, thanks!