chore: removes docs-presubmit.cfg template

Source-Link: googleapis/synthtool@373d00f
Post-Processor: gcr.io/cloud-devrel-public-resources/owlbot-python:latest@sha256:2dc6f67639bee669c33c6277a624ab9857d363e2fd33ac5b02d417b7d25f1ffc

.github/.OwlBot.lock.yaml

@@ -13,5 +13,5 @@
 # limitations under the License.
 docker:
   image: gcr.io/cloud-devrel-public-resources/owlbot-python:latest
-  digest: sha256:52210e0e0559f5ea8c52be148b33504022e1faef4e95fbe4b32d68022af2fa7e
-# created: 2024-07-08T19:25:35.862283192Z
+  digest: sha256:2dc6f67639bee669c33c6277a624ab9857d363e2fd33ac5b02d417b7d25f1ffc
+# created: 2024-08-15T17:41:26.438340772Z

.kokoro/docker/docs/Dockerfile

@@ -72,19 +72,18 @@ RUN tar -xvf Python-3.10.14.tgz
 RUN ./Python-3.10.14/configure --enable-optimizations
 RUN make altinstall
 
-RUN python3.10 -m venv /venv
-ENV PATH /venv/bin:$PATH
+ENV PATH /usr/local/bin/python3.10:$PATH
 
 ###################### Install pip
 RUN wget -O /tmp/get-pip.py 'https://bootstrap.pypa.io/get-pip.py' \
-  && python3 /tmp/get-pip.py \
+  && python3.10 /tmp/get-pip.py \
   && rm /tmp/get-pip.py
 
 # Test pip
-RUN python3 -m pip
+RUN python3.10 -m pip
 
 # Install build requirements
 COPY requirements.txt /requirements.txt
-RUN python3 -m pip install --require-hashes -r requirements.txt
+RUN python3.10 -m pip install --require-hashes -r requirements.txt
 
 CMD ["python3.10"]