Removing gratuitous relativePath from pom.xmls

The default value for relativePath is: ../pom.xml

Change-Id: I1f5e5e6bfa1e91fcddae4f8cb8ab0c00c276e6b0
diff --git a/datamodel/pom.xml b/datamodel/pom.xml
index 9fb30d1..aaf1803 100644
--- a/datamodel/pom.xml
+++ b/datamodel/pom.xml
@@ -21,7 +21,6 @@
         <groupId>org.onosproject</groupId>
         <artifactId>onos-yangutils</artifactId>
         <version>1.7.0-SNAPSHOT</version>
-        <relativePath>../pom.xml</relativePath>
     </parent>
 
     <artifactId>yangutils-datamodel</artifactId>
diff --git a/plugin/pom.xml b/plugin/pom.xml
index 4a6ade8..9afb4da 100644
--- a/plugin/pom.xml
+++ b/plugin/pom.xml
@@ -21,7 +21,6 @@
         <groupId>org.onosproject</groupId>
         <artifactId>onos-yangutils</artifactId>
         <version>1.7.0-SNAPSHOT</version>
-        <relativePath>../pom.xml</relativePath>
     </parent>
 
     <artifactId>yangutils-maven-plugin</artifactId>
diff --git a/pom.xml b/pom.xml
index 0ad4ebf..44d8da5 100644
--- a/pom.xml
+++ b/pom.xml
@@ -21,7 +21,6 @@
         <groupId>org.onosproject</groupId>
         <artifactId>onlab-utils</artifactId>
         <version>1.7.0-SNAPSHOT</version>
-        <relativePath>../pom.xml</relativePath>
     </parent>
 
     <artifactId>onos-yangutils</artifactId>