tox-uv is not needed to run tests in our environment.

--- pyproject_fmt_rust-1.2.1/tox.ini.orig
+++ pyproject_fmt_rust-1.2.1/tox.ini
@@ -1,7 +1,6 @@
 [tox]
 requires =
     tox>=4.2
-    tox-uv>=1.11.3
 env_list =
     fix
     3.13