chore: removes docs-presubmit.cfg template (#812)

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

Co-authored-by: Owl Bot <gcf-owl-bot[bot]@users.noreply.github.com>
Co-authored-by: Lingqing Gan <lingqing.gan@gmail.com>

Author: gcf-owl-bot[bot]

.github/.OwlBot.lock.yaml

@@ -13,5 +13,5 @@
 # limitations under the License.
 docker:
   image: gcr.io/cloud-devrel-public-resources/owlbot-python:latest
-  digest: sha256:94bb690db96e6242b2567a4860a94d48fa48696d092e51b0884a1a2c0a79a407
-# created: 2024-07-31T14:52:44.926548819Z
+  digest: sha256:2dc6f67639bee669c33c6277a624ab9857d363e2fd33ac5b02d417b7d25f1ffc
+# created: 2024-08-15T17:41:26.438340772Z