You likely already know that TimescaleDB is an extension to PostgreSQL, so you get everything you'd get with PostgreSQL plus the added goodies of TimescaleDB. All that said, you can drop (or detach) data partitions in PostgreSQL (however you decide to partition...) Does that not do the trick for your use case, though? https://www.postgresql.org/docs/10/ddl-partitioning.html

Transparency: I work for Timescale