Revert "GCS_MAVLink: send radio_in using rcmap"

This reverts commit 0881ccbee0c6153c4132675ec5c9d2087dcc4a0f.
Revert "Plane: use rcmap when sending radio_in to GCS"

This reverts commit 441f23eed4af6d0be953a084aeb16f3dc622e426.
Revert "Copter: use rcmap when sending radio_in to GCS"

This reverts commit 716f625924057f47334cd18cdf7f2a3b3a9ed027.
Revert "Rover: use rcmap when sending radio_in to GCS"

This reverts commit fb867f3a06b16cb96014e9d03535758bfce2494b.