pip uninstall doesn't flush the FSM cache

[chrsbats]

Describe the issue as clearly as possible:

After doing pip uninstall there's a bunch of numba jit stuff left behind in

/python3.11/site-packages/outlines/fsm/__pycache__/     
/python3.11/site-packages/outlines/text/__pycache__/     

I noticed this when upgrading to a new outlines version while trying to debug stuff.

This is probably harmless as the cache is probably invalidated when the source code changes but you never know.

https://numba.pydata.org/numba-doc/latest/developer/caching.html

"The cache is invalidated when the corresponding source file is modified. However, it is necessary sometimes to clear the cache directory manually. For instance, changes in the compiler will not be recognized because the source files are not modified.

To clear the cache, the cache directory can be simply removed."

Maybe it just requires documentation somewhere?

Steps/code to reproduce the bug:

pip install outlines
<compile some fsm>
pip uninstall outlines

Expected result:

/python3.11/site-packages/outlines/fsm/__pycache__/     
/python3.11/site-packages/outlines/text/__pycache__/     

to be empty.

Error message:

No response

Outlines/Python version information:

Version information
0.0.42

Context for the issue:

No response