Revert "card: force load eMMC"
Revert "card: force load eMMC"

This reverts commit 2a4c2b0aa6b1da928be46da21486dba508c9954e.

Signed-off-by: Robert Nelson <d6c41255011d14bfa93d8562b946ca186cfa0c7b@gmail.com>

hankchan/bbb-image-builder,robert-budde/omap-image-builder,OpenROV-forks/omap-image-builder,beagleboard/image-builder,miloh/image-builder,eliasbakken/omap-image-builder,miloh/image-builder,jadonk/image-builder,beagleboard/image-builder,BrianAdams/omap-image-builder,OpenROV-forks/omap-image-builder,eliasbakken/kamikaze,robert-budde/omap-image-builder,mhaberler/omap-image-builder,RobertCNelson/omap-image-builder,jadonk/image-builder,jlefley/omap-image-builder,RobertCNelson/omap-image-builder,gthrive/image-builder