These were deprecated in #17578 and #17585, with expected 0.21 removal notified in the 0.20 release notes.
0- The `getaddressinfo` RPC has had its `label` field deprecated
1  (re-enable for this release using the configuration parameter
2  `-deprecatedrpc=label`).  The `labels` field is altered from returning
3  JSON objects to returning a JSON array of label names (re-enable
4  previous behavior for this release using the configuration parameter
5  `-deprecatedrpc=labelspurpose`).  Backwards compatibility using the
6  deprecated configuration parameters is expected to be dropped in the
7  0.21 release.  (#17585, [#17578](/bitcoin-bitcoin/17578/))