Citygml4j isn't needed

pom.xml

@@ -9,12 +9,6 @@
 		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
 	</properties>
 	<dependencies>
-		<!-- https://mvnrepository.com/artifact/org.citygml4j/citygml4j -->
-		<dependency>
-			<groupId>org.citygml4j</groupId>
-			<artifactId>citygml4j</artifactId>
-			<version>2.10.3</version>
-		</dependency>
 		<!-- https://mvnrepository.com/artifact/junit/junit -->
 		<dependency>
 			<groupId>junit</groupId>