I am not a chemist, I come from a computer science background. Bung et al.  say in the Data preprocessing part that they used Python RDKit to remove stereochemistry, salts, and molecules with undesirable atoms or groups.
I was looking for a way to do so in the RDKit documentation but couldn't find any. Can anyone give a code example to achieve this?
- Bung, N.; Krishnan, S. R.; Bulusu, G.; Roy, A. De Novo design of new chemical entities for SARS-CoV-2 using artificial intelligence. Future Med. Chem. 2021, 13 (6), 575–585. DOI: 10.4155/fmc-2020-0262. (Free Access)