travis-ci: remove unused files

travis-ci: remove unused files

Those files were commited by mistake. I implemented building
dependencies in 4 separate scripts, later Steffan Karger combined
all 4 scripts into "build-deps.sh".

Signed-off-by: Ilya Shipitsin <chipitsine@gmail.com>
Acked-by: Steffan Karger <steffan.karger@fox-it.com>
Message-Id: <1488734492-5319-1-git-send-email-chipitsine@gmail.com>
URL: https://www.mail-archive.com/openvpn-devel@lists.sourceforge.net/msg14234.html
Signed-off-by: Gert Doering <gert@greenie.muc.de>