[config] delete dynamic-config-builder
[config] delete dynamic-config-builder

This should have been deleted in an earlier commit where
dynamic-config-builder replaced config-builder.

Closes: #2120
Approved by: dmitri-perelman

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