dri: delete gen-symbol-redefs.py

Introduced in ba10d79cca8d93c9f366 but it looks like it was never wired
into anything.

Signed-off-by: Eric Engestrom <eric@engestrom.ch>
Reviewed-by: Kristian H. Kristensen <hoegsberg@google.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
Tested-by: Marge Bot <https://gitlab.freedesktop.org/mesa/mesa/merge_requests/3669>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/merge_requests/3669>
1 file changed