It is broken and throws critical, see #10596.
Expedient to hide it instead of fixing it, to not block 3.0rc1.
As discussed in #10652, a user can simply restart GIMP instead.
"Refresh Scripts" is a poor design, a bandaid.
There are plans for better alternatives to install/remove scripts.
The MR for #10652 shows the reason it throws critical,
and could fix it,
but completing the MR requires time we don't have.
Note the MR is not on these files, but on core plugin machinery.
The change is to extract functions to a separate file,
and still build them, but not call them or link them.
They also are not translated while not being called.
Eventually, the extracted files can be deleted (or restored when they work.)
There is other related cruft that needs deletion in scheme-wrapper.c.
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