utilrb: do not install hoe gem - no longer needed
utilrb: do not install hoe gem - no longer needed

Signed-off-by: Steven Bellens <19f8cde34583e1db3c36bad5879453e73b435acf@mech.kuleuven.be>

orocos-toolchain/utilrb-ext,orocos-toolchain/utilrb-ext