Summary:
In case, users fail to add a database to an xCluster config and the running and failed database(replication setup not done) has an equal or higher number of tables then our pre-checks fail assuming we are deleting all the tables in replication. But, in reality, we only remove tables with the replication setup not done.
Modified the check only to validate if the removed tables had replication setup done previously.

Test Plan: Added local provider test

Reviewers: hzare, sanketh, cwang

Reviewed By: cwang

Subscribers: yugaware

Differential Revision: https://phorge.dev.yugabyte.com/D38750