Remove unused code

Dockerfile

@@ -3,18 +3,8 @@ FROM stakater/pipeline-tools:SNAPSHOT-PR-8-13
 # Default to UTF-8 file.encoding
 ENV LANG C.UTF-8
 
-# add a simple script that can auto-detect the appropriate JAVA_HOME value
-# based on whether the JDK or only the JRE is installed
-RUN { \
-		echo '#!/bin/sh'; \
-		echo 'set -e'; \
-		echo; \
-		echo 'readlink -f /usr/bin/java | sed "s:/bin/java::"'; \
-	} > /usr/local/bin/docker-java-home \
-	&& chmod +x /usr/local/bin/docker-java-home
 ENV JAVA_HOME /usr/lib/jvm/java-1.8.0-openjdk-1.8.0.191.b12-1.el7_6.x86_64
 ENV PATH $PATH:${JAVA_HOME}/jre/bin:/usr/lib/jvm/${JAVA_HOME}/bin
-
 ENV JAVA_VERSION 8u191
 ENV JAVA_YUM_VERSION 1.8.0.191.b12