chore: remove unused files (#976)

* chore: remove unused files

* remove post processing for .kokoro/docs

* add new line

Author: parthea

.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:f016446d6e520e5fb552c45b110cba3f217bffdd3d06bdddd076e9e6d13266cf
-# created: 2025-02-21T19:32:52.01306189Z
+  digest: sha256:5581906b957284864632cde4e9c51d1cc66b0094990b27e689132fe5cd036046
+# created: 2025-03-05

.kokoro/docker/docs/Dockerfile

@@ -261,7 +261,7 @@ def place_before(path, text, *before_text, escape=None):
 # --------------------------------------------------------------------------
 
 # add shared environment variables to test configs
-tracked_subdirs = ["continuous", "presubmit", "samples", "docs"]
+tracked_subdirs = ["continuous", "presubmit", "samples"]
 for subdir in tracked_subdirs:
     for path, subdirs, files in os.walk(f".kokoro/{subdir}"):
         for name in files: