Remove old TODOs from gen script
Remove old TODOs from gen script

Found several resolved TODOs in the script so I removed the
comments.
I also removed some code that was OP-specific since that support
is not required here and it just cluttered things up.

Change-Id: I695f8456b94aab9cab9199f159caa44b83560db0
Reviewed-on: http://ralgit01.raleigh.ibm.com/gerrit1/30321
Tested-by: Jenkins Server <8e3f934e4c44875bc48d33da3ea13d93ba9a233f@us.ibm.com>
Tested-by: Jenkins OP Build CI <e610bd72261d3c0a48f1e8ae36832ab00774d426@us.ibm.com>
Tested-by: FSP CI Jenkins <aa9e4d9ac7cd25905e9c0dd36d4150516e73dd86@us.ibm.com>
Reviewed-by: Matt Derksen <dfaaf609b81bd1529ae3a1d95ea4eeed3f78c848@us.ibm.com>
Reviewed-by: Elizabeth K. Liner <2cf7b278f097e7e2abe996aafb02aa8116b785d6@us.ibm.com>
Reviewed-by: Daniel M. Crowell <912029ca9254ac7b5854e56910561d682e1fa2d0@us.ibm.com>

open-power/hostboot,open-power/hostboot,open-power/hostboot,open-power/hostboot,open-power/hostboot