revert(pom.xml): revert change for root pom.xml

Author: kevinkowa

pom.xml

@@ -433,14 +433,6 @@
                 <groupId>org.codehaus.mojo</groupId>
                 <artifactId>buildnumber-maven-plugin</artifactId>
             </plugin>
-            <plugin>
-                <groupId>org.apache.maven.plugins</groupId>
-                <artifactId>maven-compiler-plugin</artifactId>
-                <configuration>
-                    <source>7</source>
-                    <target>7</target>
-                </configuration>
-            </plugin>
         </plugins>
     </build>