refactor(caching): remove redundant TypeVar definitions

Author: iosayin

other/least_recently_used.py

@@ -2,9 +2,6 @@
 
 import sys
 from collections import deque
-from typing import TypeVar
-
-T = TypeVar("T")
 
 
 class LRUCache[T]:

other/lfu_cache.py

@@ -1,10 +1,6 @@
 from __future__ import annotations
 
 from collections.abc import Callable
-from typing import TypeVar
-
-T = TypeVar("T")
-U = TypeVar("U")
 
 
 class DoubleLinkedListNode[T, U]:

other/lru_cache.py

@@ -1,10 +1,6 @@
 from __future__ import annotations
 
 from collections.abc import Callable
-from typing import TypeVar
-
-T = TypeVar("T")
-U = TypeVar("U")
 
 
 class DoubleLinkedListNode[T, U]: