Remove forceful creation of figures directory on import

This was added during the process of getting the inlined docs to
build with GitHub Actions, but in the end it didn't work anyway.
And it quickly leads to unnecessary exceptions when emd-falsify is used as a library.

src/emd_falsify/config/__init__.py

@@ -44,7 +44,8 @@ class Config(ValConfig):
     class paths:
         figures : Path
 
-        ensure_dir_exists = validator('figures', allow_reuse=True)(ensure_dir_exists)
+        # This is typically used as a library: don’t create random paths on users’ computers
+        #ensure_dir_exists = validator('figures', allow_reuse=True)(ensure_dir_exists)
 
     class mp:
         max_cores: int