Revert "Fix code linter error"

This reverts commit 96d9d05.

The commit must be reverted because it causes consistent job submission failures with error:

CannotStartContainerError:
Error response from daemon: unable to find user root ENTRYPOINT [/parallelcluster/bin/entrypoint.sh]:
no matching entries in passwd file

Author: gmarciani

cli/src/pcluster/resources/batch/docker/alinux2/Dockerfile

@@ -57,4 +57,4 @@ ENV PATH "/bin:/usr/bin:/sbin:/usr/sbin:/usr/local/bin:/usr/local/sbin:/usr/lib6
 # expose ssh port
 EXPOSE 22
 
-USER root ENTRYPOINT ["/parallelcluster/bin/entrypoint.sh"]
+ENTRYPOINT ["/parallelcluster/bin/entrypoint.sh"]

cli/src/pcluster/resources/batch/docker/alinux2023/Dockerfile

@@ -57,4 +57,4 @@ ENV PATH "/bin:/usr/bin:/sbin:/usr/sbin:/usr/local/bin:/usr/local/sbin:/usr/lib6
 # expose ssh port
 EXPOSE 22
 
-USER root ENTRYPOINT ["/parallelcluster/bin/entrypoint.sh"]
+ENTRYPOINT ["/parallelcluster/bin/entrypoint.sh"]