Remove fc's bz2 unused linkage
Remove fc's bz2 unused linkage

fc links to bz2 but this isn't required. Nothing uses bz2 and the HAS_BZIP2 macro that is set is not used anywhere. Remove this as it causes a runtime dependency that is 100% unneeded

EOSIO/eos,EOSIO/eos,EOSIO/eos,EOSIO/eos,EOSIO/eos