QGCMAVLink: Remove mavlink warnings
QGCMAVLink: Remove mavlink warnings

mavlink as submodule contains more warnings than particles in the universe.
This results in a terrible experience for developers, since it makes harder to find
real warning messages for QGC.

Signed-off-by: Patrick José Pereira <c2b7559029b4032a4ce95718d7d3bc36c8a1d7c1@gmail.com>

Hunter522/qgroundcontrol,Hunter522/qgroundcontrol,Hunter522/qgroundcontrol,Hunter522/qgroundcontrol,Hunter522/qgroundcontrol,Hunter522/qgroundcontrol