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

This reverts commit ba7ed18443fb0789526f9d03af7aa34e953aaa6d.
diff --git a/hyracks/hyracks-examples/tpch-example/pom.xml b/hyracks/hyracks-examples/tpch-example/pom.xml
index 21c5332..ea7fe8a 100644
--- a/hyracks/hyracks-examples/tpch-example/pom.xml
+++ b/hyracks/hyracks-examples/tpch-example/pom.xml
@@ -26,7 +26,7 @@
   <parent>
     <groupId>org.apache.hyracks</groupId>
     <artifactId>hyracks-examples</artifactId>
-    <version>0.2.18-SNAPSHOT</version>
+    <version>0.2.17-incubating</version>
   </parent>