chore: remove nox uninstall/reinstall from python build.sh template

.github/.OwlBot.lock.yaml

@@ -15,3 +15,4 @@ docker:
   image: gcr.io/cloud-devrel-public-resources/owlbot-python:latest
   digest: sha256:a8a80fc6456e433df53fc2a0d72ca0345db0ddefb409f1b75b118dfd1babd952
 # created: 2024-03-15T16:25:47.905264637Z
+

.kokoro/docker/docs/Dockerfile

@@ -80,6 +80,7 @@ RUN wget -O /tmp/get-pip.py 'https://bootstrap.pypa.io/get-pip.py' \
 # Test pip
 RUN python3 -m pip
 
+
 # Install build requirements
 COPY requirements.txt /requirements.txt
 RUN python3 -m pip install --require-hashes -r requirements.txt

.kokoro/docker/docs/requirements.txt

@@ -1,5 +1,5 @@
 #
-# This file is autogenerated by pip-compile with Python 3.9
+# This file is autogenerated by pip-compile with Python 3.10
 # by the following command:
 #
 #    pip-compile --allow-unsafe --generate-hashes requirements.in