No longer need to delete composer.lock

build.xml

@@ -344,7 +344,6 @@
     <!-- delete the configuration, sample index, logs and cache data -->
     <delete file="${srcdir}/import/solrmarc.log" failonerror="true" />
     <delete dir="${srcdir}/solr" includeemptydirs="true" failonerror="true" />
-    <delete file="${srcdir}/composer.lock" failonerror="false" />
     <delete file="${srcdir}/composer.phar" failonerror="false" />
     <delete file="${srcdir}/vufind-exception.log" failonerror="false" />
     <delete dir="${srcdir}/vendor" includeemptydirs="true" failonerror="false" />