[consensus] remove customize quorum power in chained_bft_smr_test
[consensus] remove customize quorum power in chained_bft_smr_test

Closes: #1892
Approved by: davidiw

aptos-labs/aptos-core,libra/libra,aptos-labs/aptos-core,libra/libra,aptos-labs/aptos-core,aptos-labs/aptos-core,aptos-labs/aptos-core,libra/libra,aptos-labs/aptos-core,libra/libra,libra/libra,aptos-labs/aptos-core