Remove non-applicable smart contract feature gates

[lukelee-sl]

Problem

There are feature gates in the mono service implementation of the smart contract service which should be removed when implementing the modularized smart contract service.

Solution

Ensure that no longer relevant feature gates are removed when implementing the modularized smart contract service. A summary of existing feature gates and discussion of which ones are no longer relevant can be found in this notion page https://www.notion.so/swirldslabs/Smart-Contract-Feature-Gates-d27ac9a7281942d69de06b031cf3e828

Alternatives

No response