remove import

Signed-off-by: Valentijn Scholten <valentijnscholten@gmail.com>

Author: valentijnscholten

src/main/java/org/dependencytrack/tasks/repositories/ComposerAdvisoryMirrorTask.java

@@ -29,7 +29,6 @@
 import org.apache.commons.lang3.StringUtils;
 import org.dependencytrack.event.ComposerAdvisoryMirrorEvent;
 import org.dependencytrack.event.IndexEvent;
-import org.dependencytrack.model.ConfigPropertyConstants;
 import org.dependencytrack.model.Repository;
 import org.dependencytrack.model.RepositoryType;
 import org.dependencytrack.model.Severity;