gnu: python-valkey: Reduce closure size.

* gnu/packages/python-xyz.scm (python-valkey)[native-inputs]: Remove
python-cachetools, python-pytest, python-pytest-asyncio, and
python-pytest-timeout.

Change-Id: I96930eee30ac84275a2fb33e29de43fd5a703ce1

gnu/packages/python-xyz.scm

@@ -27274,11 +27274,7 @@ input.")
      ;; Maybe we need to spawn a valkey server?
      (list #:tests? #f))
     (native-inputs
-     (list python-cachetools
-           python-pytest
-           python-pytest-asyncio
-           python-pytest-timeout
-           python-setuptools))
+     (list python-setuptools))
     (home-page "https://github.com/valkey-io/valkey-py")
     (synopsis "Python client for Valkey")
     (description