ZOOKEEPER-3679: Upgrade maven-compiler-plugin For ZooKeeper-jute

Author: David Mollitor <dmollitor@apache.org>

Reviewers: Enrico Olivelli <eolivelli@apache.org>

Closes #1207 from belugabehr/ZOOKEEPER-3679

zookeeper-jute/pom.xml

@@ -72,7 +72,6 @@
       </plugin>
       <plugin>
         <artifactId>maven-compiler-plugin</artifactId>
-        <version>2.3.2</version>
         <executions>
           <execution>
             <id>pre-compile-jute</id>