#126 - Polishing.

Remove superfluous property.

Author: mp911de

pom.xml

@@ -27,7 +27,6 @@
 		<sonar.dynamicAnalysis>reuseReports</sonar.dynamicAnalysis>
 
 		<degraph-check.version>0.1.4</degraph-check.version>
-		<hsqldb.version>2.4.1</hsqldb.version>
 		<postgresql.version>42.2.5</postgresql.version>
 		<mysql.version>5.1.47</mysql.version>
 		<jasync.version>0.9.52</jasync.version>