Dockerfile: Remove awscli Python package

This commit removes the `awscli` Python package from the base CI image
because it is not currently not used by any Zephyr CI workflows and has
`PyYAML` dependency conflict with the Renode (see the GH issue #145).

If the AWS command line tool is necessary in the future, look into
either migrating to the `awscliv2` or installing the `awscli` package
in a virtual environment.

Signed-off-by: Stephanos Ioannidis <root@stephanos.io>

Dockerfile.base

@@ -112,7 +112,7 @@ RUN python3 -m pip install -U --no-cache-dir pip && \
  pip3 install --no-cache-dir \
  -r https://raw.githubusercontent.com/zephyrproject-rtos/zephyr/master/scripts/requirements.txt \
  -r https://raw.githubusercontent.com/zephyrproject-rtos/mcuboot/master/scripts/requirements.txt \
- awscli GitPython imgtool junitparser numpy protobuf PyGithub \
+ GitPython imgtool junitparser numpy protobuf PyGithub \
  pylint sh statistics west && \
  pip3 check