remove unused property
diff --git a/pom.xml b/pom.xml
index e8184a9..35afb28 100644
--- a/pom.xml
+++ b/pom.xml
@@ -38,7 +38,6 @@
     <sling.java.version>8</sling.java.version>
     <javadoc.excludePackageNames />
     <project.build.outputTimestamp>1970-01-01T00:00:00Z</project.build.outputTimestamp>
-    <org.ops4j.pax.exam.version>4.13.3</org.ops4j.pax.exam.version>
   </properties>
 
   <scm>