Comment radio auto-calibration code as it's untested, yet recommendeded

This originally used define guards, which caused a warning when compiling
because radioSetStateOff() wasn't getting used anywhere.
Merge branch 'master' into imageproc2.5-integration
Enable radio auto-calibration code for easier testing; off by default
Merge branch 'master' into imageproc2.5-integration
Merge remote-tracking branch 'biomimetics/imageproc2.5-integration' into imageproc2.5-integration
Merge remote-tracking branch 'Buchan/imageproc2.5-integration' into imageproc2.5-integration
Boinked up the data rate, disabled DLPF
Merge remote-tracking branch 'refs/remotes/duncan/imageproc2.5-integration' into imageproc2.5-integration
Change data rate for configuration writes
Merge remote-tracking branch 'refs/remotes/duncan/imageproc2.5-integration' into imageproc2.5-integration