Revert "[maven-release-plugin] prepare for next development iteration"

This reverts commit ab6fd5e74e80f56858ab643a5863f8d6299b42bc.
diff --git a/hyracks-fullstack/algebricks/algebricks-examples/piglet-example/pom.xml b/hyracks-fullstack/algebricks/algebricks-examples/piglet-example/pom.xml
index 318f35c..133c486 100644
--- a/hyracks-fullstack/algebricks/algebricks-examples/piglet-example/pom.xml
+++ b/hyracks-fullstack/algebricks/algebricks-examples/piglet-example/pom.xml
@@ -24,7 +24,7 @@
   <parent>
     <groupId>org.apache.hyracks</groupId>
     <artifactId>algebricks-examples</artifactId>
-    <version>0.3.1-SNAPSHOT</version>
+    <version>0.3.0</version>
   </parent>
 
   <properties>
diff --git a/hyracks-fullstack/algebricks/algebricks-examples/pom.xml b/hyracks-fullstack/algebricks/algebricks-examples/pom.xml
index ecef960..9d99d98 100644
--- a/hyracks-fullstack/algebricks/algebricks-examples/pom.xml
+++ b/hyracks-fullstack/algebricks/algebricks-examples/pom.xml
@@ -33,7 +33,7 @@
   <parent>
     <groupId>org.apache.hyracks</groupId>
     <artifactId>algebricks</artifactId>
-    <version>0.3.1-SNAPSHOT</version>
+    <version>0.3.0</version>
   </parent>
 
   <licenses>