Remove duplicate dependency

- commons-configuration

Change-Id: I774180d2525497a52c2e730aebf2d5eb5fcf09f8
diff --git a/pom.xml b/pom.xml
index ad4ae60..c722008 100644
--- a/pom.xml
+++ b/pom.xml
@@ -173,12 +173,6 @@
             </dependency>
 
             <dependency>
-                <groupId>commons-configuration</groupId>
-                <artifactId>commons-configuration</artifactId>
-                <version>1.10</version>
-            </dependency>
-
-            <dependency>
                 <groupId>org.codehaus.jackson</groupId>
                 <artifactId>jackson-core-asl</artifactId>
                 <version>1.9.13</version>