Function bpf_map_delete_elem 

pub fn bpf_map_delete_elem<F: KernelAuxiliaryOps>(
    arg: BpfMapUpdateArg,
) -> LinuxResult<()>

Look up and delete an element by key in a specified map.

WARN

Not all map types (particularly array maps) support this operation, instead a zero value can be written to the map value. Check the map types page to check for support.

See https://ebpf-docs.dylanreimerink.nl/linux/syscall/BPF_MAP_DELETE_ELEM/