Apply batched suggestions from code review

Co-authored-by: Christian Clauss <cclauss@me.com>

Author: cclauss

sorts/circle_sort.py

@@ -9,16 +9,13 @@
 """
 
 from collections.abc import MutableSequence
-from typing import Any, Protocol, TypeVar
+from typing import Any, Protocol
 
 
 class Comparable(Protocol):
     def __lt__(self, other: Any, /) -> bool: ...
 
 
-T = TypeVar("T", bound=Comparable)
-
-
 def circle_sort[T: Comparable](
     collection: MutableSequence[T],
 ) -> MutableSequence[T]: