fix toxini

Author: emdneto

CONTRIBUTING.md

@@ -99,7 +99,7 @@ $ pip install tox-uv
 
 ```sh
 # Will use uv
-$ TOX_UV="uv" tox -e py312-test-instrumentation-aiopg
+$ TOX_ENV="uv" tox -e py312-test-instrumentation-aiopg
 ```
 
 ### Troubleshooting

tox.ini

@@ -1116,14 +1116,6 @@ commands =
 
   coverage: {toxinidir}/scripts/coverage.sh
 
-[testenv:uv]
-deps = {[testenv]deps}
-commands_pre = {[testenv]commands_pre}
-commands = {[testenv]commands}
-setenv =
-  {[testenv]setenv}
-  UV_CMD="uv"
-
 [testenv:docs]
 deps =
   -c {toxinidir}/dev-requirements.txt