[aptos-cli] Remove default max gas, and rely on estimation
[aptos-cli] Remove default max gas, and rely on estimation

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