Remove unused 'between' import from filters.py docstring example

Author: Abel Milash

src/PowerPlatform/Dataverse/models/filters.py

@@ -10,7 +10,7 @@
 
 Example::
 
-    from PowerPlatform.Dataverse.models.filters import eq, gt, between
+    from PowerPlatform.Dataverse.models.filters import eq, gt
 
     # Simple comparison
     expr = eq("statecode", 0)