Revert "Add feature to extract kernel image from other recovery image for use in recovery."
Revert "Add feature to extract kernel image from other recovery image for use in recovery."

This reverts commit c99f52ab42a3204c0b7cee1ffbcbee77acf2d11c

Change-Id: I21c8f759ab49fb947c856f64369a6595ffdbbb0a
Reviewed-on: http://gerrit.chromium.org/gerrit/6373
Reviewed-by: Chris Sosa <959d3d631fb6f17f1b07f751372041a1edb210d1@chromium.org>
Tested-by: Chris Sosa <959d3d631fb6f17f1b07f751372041a1edb210d1@chromium.org>

mischief/scripts,smilart/scripts,fivethreeo/scripts,coreos/scripts,mjg59/scripts,smilart/scripts,glevand/coreos--scripts,sigma/coreos-scripts,sigma/coreos-scripts,fivethreeo/scripts,mjg59/scripts,coreos/scripts,gtank/scripts,andrejro/coreos--scripts,glevand/coreos--scripts,mischief/scripts,endocode/scripts,crawford/scripts,gtank/scripts,trnubo/scripts,vmware/coreos-scripts,crawford/scripts,zhang0137/scripts,sigma/coreos-scripts,vmware/coreos-scripts,mischief/scripts,marineam/coreos-scripts,BugRoger/scripts,crawford/scripts,nicescale/scripts,mjg59/scripts,marineam/coreos-scripts,bcwaldon/coreos-scripts,bcwaldon/coreos-scripts,andrejro/coreos--scripts,zhang0137/scripts,endocode/scripts,fivethreeo/scripts,zhang0137/scripts,gtank/scripts,trnubo/scripts,marineam/coreos-scripts,vmware/coreos-scripts,smilart/scripts,BugRoger/scripts,BugRoger/scripts,bcwaldon/coreos-scripts,andrejro/coreos--scripts,trnubo/scripts,endocode/scripts,nicescale/scripts,nicescale/scripts