maintainers: resign from maintainership of link bonding
maintainers: resign from maintainership of link bonding

I've been unable to dedicate enough time to actively help in the
maintainership of the link bonding PMD, and as Chas is now actively
maintaining this PMD, I'm removing my name against it in the
MAINTAINERS file.

Signed-off-by: Declan Doherty <b4388acd850cd8caad5000a112795063f04807ac@intel.com>

john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk