really remove mavlink folder

mavlink/include/mavlink/config.h

mavlink/include/mavlink/v1.0

mavlink/lib/pkgconfig/mavlink.pc

mavlink/share/mavlink/src/v1.0/pixhawk/pixhawk.pb.cc

mavlink/share/pyshared/pymavlink/.gitignore

mavlink/share/pyshared/pymavlink/APM_Mavtest/APM_Mavtest.pde

mavlink/share/pyshared/pymavlink/README.txt

mavlink/share/pyshared/pymavlink/examples/apmsetrate.py

mavlink/share/pyshared/pymavlink/examples/bwtest.py

mavlink/share/pyshared/pymavlink/examples/flightmodes.py

mavlink/share/pyshared/pymavlink/examples/flighttime.py

mavlink/share/pyshared/pymavlink/examples/gpslock.py

mavlink/share/pyshared/pymavlink/examples/magfit.py

mavlink/share/pyshared/pymavlink/examples/magfit_delta.py

mavlink/share/pyshared/pymavlink/examples/magfit_gps.py

mavlink/share/pyshared/pymavlink/examples/magtest.py

mavlink/share/pyshared/pymavlink/examples/mavgraph.py

mavlink/share/pyshared/pymavlink/examples/mavlogdump.py

mavlink/share/pyshared/pymavlink/examples/mavparms.py

mavlink/share/pyshared/pymavlink/examples/mavtest.py