set parent to pom-fiji 2.0.0-beta-0 and clean up poms.

pom.xml

@@ -37,12 +37,10 @@
 		<dependency>
 			<groupId>sc.fiji</groupId>
 			<artifactId>SPIM_Registration</artifactId>
-			<version>2.0.0-SNAPSHOT</version>
 		</dependency>
 		<dependency>
 			<groupId>java3d</groupId>
 			<artifactId>vecmath</artifactId>
-			<version>1.3.1</version>
 		</dependency>
 		<!--
 		The following dependencies are added to deal with old SPIM_Registration version currently deployed in maven.imagej.net.