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

This reverts commit 1b18e778ed8c4028e80ec828c655523e5b2eff2b.
diff --git a/asterix-test-framework/pom.xml b/asterix-test-framework/pom.xml
index d51d52f..68ed4f9 100644
--- a/asterix-test-framework/pom.xml
+++ b/asterix-test-framework/pom.xml
@@ -21,7 +21,7 @@
 	<parent>
 		<artifactId>asterix</artifactId>
 		<groupId>org.apache.asterix</groupId>
-		<version>0.8.9-SNAPSHOT</version>
+		<version>0.8.8-incubating</version>
 	</parent>
 	<artifactId>asterix-test-framework</artifactId>