Do not require openssh-clients

The installation of openssh-clients failed since the beginning
because of a typo; however, the Gerrit Docker image was always
built successfully without issues. That means that we do not
need the openssh-clients package after all.

Change-Id: Ib2b95f9a4ee42b1216841b0827ae52a24ff8add0
diff --git a/centos/7/Dockerfile b/centos/7/Dockerfile
index ef8365f..27fc96c 100644
--- a/centos/7/Dockerfile
+++ b/centos/7/Dockerfile
@@ -1,8 +1,7 @@
 FROM centos:7.3.1611
 MAINTAINER Gerrit Code Review Community
-# Allow remote connectivity and sudo
-RUN yum -y install openssh-client initscripts sudo
+RUN yum -y install initscripts sudo
 # Add Gerrit packages repository
 RUN rpm -i
diff --git a/ubuntu/16/Dockerfile b/ubuntu/16/Dockerfile
index de70b85..deed686 100644
--- a/ubuntu/16/Dockerfile
+++ b/ubuntu/16/Dockerfile
@@ -5,10 +5,9 @@
 RUN echo "deb mirror:// gerrit contrib" > /etc/apt/sources.list.d/GerritForge.list
 RUN apt-key adv --keyserver --recv-keys 1871F775
-# Allow remote connectivity and sudo
 RUN apt-get update
 RUN apt-key update
-RUN apt-get -y install openssh-client sudo
+RUN apt-get -y install sudo
 # Install OpenJDK and Gerrit in two subsequent transactions
 # (pre-trans Gerrit script needs to have access to the Java command)