Removing root_hash from consensus/consensus-types/src/executed_block.rs
Removing root_hash from consensus/consensus-types/src/executed_block.rs

Closes: #4148
Approved by: davidiw

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