sonar - remove build dir when cleaning

git-svn-id: https://svn.apache.org/repos/asf/poi/trunk@1700034 13f79535-47bb-0310-9956-ffa450edef68

sonar/ooxml/pom.xml

@@ -77,6 +77,10 @@
                             <directory>src</directory>
                             <followSymlinks>false</followSymlinks>
                         </fileset>
+                        <fileset>
+                            <directory>build</directory>
+                            <followSymlinks>false</followSymlinks>
+                        </fileset>
                     </filesets>
                 </configuration>
             </plugin>