removed duplicate information already inherited from parent

git-svn-id: https://svn.apache.org/repos/asf/maven/shared/trunk@1612208 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/pom.xml b/pom.xml
index 3d925fe..ff15d18 100644
--- a/pom.xml
+++ b/pom.xml
@@ -29,7 +29,6 @@
     <relativePath>../maven-shared-components/pom.xml</relativePath>
   </parent>
 
-  <groupId>org.apache.maven.shared</groupId>
   <artifactId>maven-shared-resources</artifactId>
   <version>2-SNAPSHOT</version>