backports/*.patch: cleanup

backports/our-std-is-good-enough.patch

@@ -1,11 +0,0 @@
---- ./limits/typing.py.orig
-+++ ./limits/typing.py
-@@ -13,7 +13,7 @@
-     Union,
- )
- 
--from typing_extensions import ClassVar, Counter, ParamSpec, Protocol, TypeAlias
-+from typing import ClassVar, Counter, ParamSpec, Protocol, TypeAlias
- 
- Serializable = Union[int, str, float]
-

backports/tests-drop-etcd3-and-k-argument.patch

@@ -1,24 +0,0 @@
-diff --git a/tests/conftest.py.orig b/tests/conftest.py
-index 2aeb758dda6..a9b2b8b2bd1 100644
---- a/tests/conftest.py.orig
-+++ b/tests/conftest.py
-@@ -3,7 +3,6 @@ import platform
- import socket
- import time
- 
--import etcd3
- import pymemcache
- import pymemcache.client
- import pymongo
-diff --git a/pytest.ini.orig b/pytest.ini
-index 38c40a713d0..8c6659e21c2 100644
---- a/pytest.ini.orig
-+++ b/pytest.ini
-@@ -17,7 +17,6 @@ addopts =
-     -rfEsxX
-     --cov=limits
-     -m "not benchmark"
--    -K
- filterwarnings =
-     error
-     module::ResourceWarning