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

This reverts commit ba7ed18443fb0789526f9d03af7aa34e953aaa6d.
diff --git a/hyracks/hyracks-storage-am-rtree/pom.xml b/hyracks/hyracks-storage-am-rtree/pom.xml
index 0faf08c..d597417 100644
--- a/hyracks/hyracks-storage-am-rtree/pom.xml
+++ b/hyracks/hyracks-storage-am-rtree/pom.xml
@@ -25,7 +25,7 @@
   <parent>
     <groupId>org.apache.hyracks</groupId>
     <artifactId>hyracks</artifactId>
-    <version>0.2.18-SNAPSHOT</version>
+    <version>0.2.17-incubating</version>
   </parent>
 
   <licenses>
@@ -59,21 +59,21 @@
   	<dependency>
   		<groupId>org.apache.hyracks</groupId>
   		<artifactId>hyracks-storage-am-common</artifactId>
-  		<version>0.2.18-SNAPSHOT</version>
+  		<version>0.2.17-incubating</version>
   		<type>jar</type>
   		<scope>compile</scope>
   	</dependency>
   	<dependency>
   		<groupId>org.apache.hyracks</groupId>
   		<artifactId>hyracks-dataflow-common</artifactId>
-  		<version>0.2.18-SNAPSHOT</version>
+  		<version>0.2.17-incubating</version>
   		<type>jar</type>
   		<scope>compile</scope>
   	</dependency>
   	<dependency>
   		<groupId>org.apache.hyracks</groupId>
   		<artifactId>hyracks-dataflow-std</artifactId>
-  		<version>0.2.18-SNAPSHOT</version>
+  		<version>0.2.17-incubating</version>
   		<type>jar</type>
   		<scope>compile</scope>
   	</dependency>