* Fix Optimism Config in L2 Genesis builder

This places the Optimism chain config in the correct place as
well as deleting the spurious Clique config in the L2 genesis.

* packages/core-utils: bedrock config type fix

* packages/contracts-bedrock: update genesis l2 task import

* packages/core-utils: bedrock - remove old todo comment
Co-authored-by: Joshua Gutow <jgutow@optimism.io>
Co-authored-by: protolambda <proto@protolambda.com>
Co-authored-by: mergify[bot] <37929162+mergify[bot]@users.noreply.github.com>