address feedback from gemini-code-assist

Author: parthea

.kokoro/docker/Dockerfile

@@ -67,7 +67,7 @@ RUN apt-get update \
   zlib1g-dev \
   # Remove `python3-setuptools` since the installed version
   # does not include a patch for CVE-2025-47273/CVE-2025-47273.
-  && apt remove -y python3-setuptools \
+  && apt-get remove -y python3-setuptools \
   && apt-get clean autoclean \
   && apt-get autoremove -y \
   && rm -rf /var/lib/apt/lists/* \