[StoneDB] Remove implementation by malwaregarry · Pull Request #963 · sqlancer/sqlancer

Removing StoneDB from the codebase since the implementation is broken and StoneDB seems to be unmaintained at the moment.
This is part of efforts to improve SQLancer's architecture and codebase in general. If it is being used, we can revert the PR.

@Zhenglin-Li since you worked on this implementation. Do you know whether the StoneDB is still working on the database?