remove unneeded feature_known
remove unneeded feature_known

it was introduced in the beginning but never used

kbrock/manageiq,jrafanie/manageiq,ManageIQ/manageiq,ManageIQ/manageiq,mzazrivec/manageiq,kbrock/manageiq,kbrock/manageiq,ManageIQ/manageiq,jrafanie/manageiq,jrafanie/manageiq,jrafanie/manageiq,mzazrivec/manageiq,ManageIQ/manageiq,mzazrivec/manageiq,mzazrivec/manageiq,kbrock/manageiq