default or selected kernelversion does not have config value CONFIG_NFSD_DEPRECATED.
Result is shown for kernelversion 5.6.18

Include support for deprecated syscall interface to NFSD

modulename: nfsctl.ko

configname: CONFIG_NFSD_DEPRECATED

Linux Kernel Configuration
└─>File systems
└─>Network File Systems
└─>Include support for deprecated syscall interface to NFSD
In linux kernel since version 2.6.37 (release Date: 2011-01-04)  
The syscall interface to nfsd was obsoleted in 2.6.0 by a new
filesystem based interface. The old interface is due for removal
in 2.6.40. If you wish to remove the interface before then
say N.

In unsure, say Y.

source code: