henningw left a comment (kamailio/kamailio#4089)
There is now a warning on the module compilation, it looks that it was introduced in this PR:
secfilter.c:136:20: warning: ‘rpc_del_wl_doc’ defined but not used [-Wunused-variable] 136 | static const char *rpc_del_wl_doc[2] = {"Delete a value from whitelist", NULL}; | ^~~~~~~~~~~~~~