Revert "[maven-release-plugin] prepare release apache-hyracks-0.2.18"

This reverts commit e6af0eee8f27019c7cf2114e66572543bbe84d18.
diff --git a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-bloomfilter-test/pom.xml b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-bloomfilter-test/pom.xml
index d5e9e43..937c299 100644
--- a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-bloomfilter-test/pom.xml
+++ b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-bloomfilter-test/pom.xml
@@ -24,7 +24,7 @@
   <parent>
     <groupId>org.apache.hyracks</groupId>
     <artifactId>hyracks-tests</artifactId>
-    <version>0.2.18</version>
+    <version>0.2.18-SNAPSHOT</version>
   </parent>
 
   <build>
diff --git a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-btree-test/pom.xml b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-btree-test/pom.xml
index 35cb064..c57690b 100644
--- a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-btree-test/pom.xml
+++ b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-btree-test/pom.xml
@@ -25,7 +25,7 @@
   <parent>
     <groupId>org.apache.hyracks</groupId>
     <artifactId>hyracks-tests</artifactId>
-    <version>0.2.18</version>
+    <version>0.2.18-SNAPSHOT</version>
   </parent>
 
   <properties>
diff --git a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-btree-test/pom.xml b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-btree-test/pom.xml
index e9dae5f..bd81ee9 100644
--- a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-btree-test/pom.xml
+++ b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-btree-test/pom.xml
@@ -24,7 +24,7 @@
   <parent>
     <groupId>org.apache.hyracks</groupId>
     <artifactId>hyracks-tests</artifactId>
-    <version>0.2.18</version>
+    <version>0.2.18-SNAPSHOT</version>
   </parent>
 
   <build>
diff --git a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-common-test/pom.xml b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-common-test/pom.xml
index a3d8f4b..40ae5d1 100644
--- a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-common-test/pom.xml
+++ b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-common-test/pom.xml
@@ -24,7 +24,7 @@
   <parent>
     <groupId>org.apache.hyracks</groupId>
     <artifactId>hyracks-tests</artifactId>
-    <version>0.2.18</version>
+    <version>0.2.18-SNAPSHOT</version>
   </parent>
 
   <build>
diff --git a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-invertedindex-test/pom.xml b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-invertedindex-test/pom.xml
index 983c645..ab1b840 100644
--- a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-invertedindex-test/pom.xml
+++ b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-invertedindex-test/pom.xml
@@ -24,7 +24,7 @@
   <parent>
     <artifactId>hyracks-tests</artifactId>
     <groupId>org.apache.hyracks</groupId>
-    <version>0.2.18</version>
+    <version>0.2.18-SNAPSHOT</version>
     <relativePath>..</relativePath>
   </parent>
 
diff --git a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-rtree-test/pom.xml b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-rtree-test/pom.xml
index 6421be6..ff0aebe 100644
--- a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-rtree-test/pom.xml
+++ b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-lsm-rtree-test/pom.xml
@@ -24,7 +24,7 @@
   <parent>
     <groupId>org.apache.hyracks</groupId>
     <artifactId>hyracks-tests</artifactId>
-    <version>0.2.18</version>
+    <version>0.2.18-SNAPSHOT</version>
   </parent>
 
   <build>
diff --git a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-rtree-test/pom.xml b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-rtree-test/pom.xml
index df8bc1e..d5cd2ea 100644
--- a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-rtree-test/pom.xml
+++ b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-am-rtree-test/pom.xml
@@ -25,7 +25,7 @@
   <parent>
     <groupId>org.apache.hyracks</groupId>
     <artifactId>hyracks-tests</artifactId>
-    <version>0.2.18</version>
+    <version>0.2.18-SNAPSHOT</version>
   </parent>
 
   <build>
diff --git a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-common-test/pom.xml b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-common-test/pom.xml
index f42ec3b..6ca4bc4 100644
--- a/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-common-test/pom.xml
+++ b/hyracks-fullstack/hyracks/hyracks-tests/hyracks-storage-common-test/pom.xml
@@ -23,7 +23,7 @@
   <parent>
     <groupId>org.apache.hyracks</groupId>
     <artifactId>hyracks-tests</artifactId>
-    <version>0.2.18</version>
+    <version>0.2.18-SNAPSHOT</version>
   </parent>
   <build>
     <plugins>
diff --git a/hyracks-fullstack/hyracks/hyracks-tests/pom.xml b/hyracks-fullstack/hyracks/hyracks-tests/pom.xml
index b03d311..e1a9be3 100644
--- a/hyracks-fullstack/hyracks/hyracks-tests/pom.xml
+++ b/hyracks-fullstack/hyracks/hyracks-tests/pom.xml
@@ -26,7 +26,7 @@
   <parent>
     <groupId>org.apache.hyracks</groupId>
     <artifactId>hyracks</artifactId>
-    <version>0.2.18</version>
+    <version>0.2.18-SNAPSHOT</version>
   </parent>
 
   <licenses>