Fix problamatic & remove stale pom related files

Change-Id: I3cf1d30ca7385a228d887c5652ac4a830659b7fd
diff --git a/apps/simplefabric/pom.xml b/apps/simplefabric/pom.xml
index a21b2d1..567287f 100644
--- a/apps/simplefabric/pom.xml
+++ b/apps/simplefabric/pom.xml
@@ -46,6 +46,11 @@
     <dependencies>
 
         <dependency>
+            <groupId>com.googlecode.concurrent-trees</groupId>
+            <artifactId>concurrent-trees</artifactId>
+        </dependency>
+
+        <dependency>
             <groupId>com.google.guava</groupId>
             <artifactId>guava</artifactId>
         </dependency>
@@ -80,12 +85,6 @@
 
         <dependency>
             <groupId>org.onosproject</groupId>
-            <artifactId>onos-core-net</artifactId>
-            <version>${project.version}</version>
-        </dependency>
-
-        <dependency>
-            <groupId>org.onosproject</groupId>
             <artifactId>onos-rest</artifactId>
             <version>${project.version}</version>
         </dependency>