default or selected kernelversion does not have config value CONFIG_NCPFS_STRONG.
Result is shown for kernelversion 6.7-rc3

Clear remove/delete inhibit when needed


Linux Kernel Configuration
└─>File systems
└─>Network File Systems
└─>Clear remove/delete inhibit when needed
In linux kernel since version 2.6.20 (release Date: 2007-02-04)  
Allows manipulation of files flagged as Delete or Rename Inhibit.
To use this feature you must mount volumes with the ncpmount
parameter "-s" (ncpfs-2.0.12 and newer). Say Y unless you are not
mounting volumes with -f 444.