pointercal-xinput: Remove as it is now included in meta-fsl-arm

The recipe has been added here before as pointercal-xinput were
included in Meta-OpenEmbedded but they're now in OE-Core. So we now
moved this to the BSP layer.

Change-Id: I741ca7db7e0fda00ad5ede8c4677956ea3bba2c5
Signed-off-by: Otavio Salvador <otavio@ossystems.com.br>
fsl-image-gui-sdk: Drop the SDK image

This image has been here for no good reason; the idea is to simplify
and improve the images and for this we ought start removing the not
intended to be kept ones.

Change-Id: If4fb75f45e8a670e9bad806e1b5b8f59d0b637f2
Signed-off-by: Otavio Salvador <otavio@ossystems.com.br>