Remove deps of persistent-test

[ncaq]

serversession depend to persistent-test on main not test.
Because I need one function.
I will copy the function and remove deps on package.

[avanov]

This looks useful as currently persistent-test is the slowest dependency to compile. When could there be a new release without it?

[ncaq]

I intend to do it.
However, it is the type of problem that only slows down the compilation and not the operation,
It is low on my personal priority list.