Require only a single JUnit version

The pom file was requiring both JUint 4.3 and 4.11, which made Maven
complain. Hence, we now settle for JUnit 4.11.

Change-Id: If2e8d8c8cadb1247d2013ce73abadc6d2319226e

pom.xml

diff --git a/pom.xml b/pom.xml
index 7fe35b9..0c13237 100644
--- a/pom.xml
+++ b/pom.xml
@@ -348,12 +348,6 @@
       <version>1.0.4</version>
     </dependency>
     <dependency>
-      <groupId>junit</groupId>
-      <artifactId>junit</artifactId>
-      <version>4.3</version>
-      <scope>test</scope>
-    </dependency>
-    <dependency>
       <groupId>log4j</groupId>
       <artifactId>log4j</artifactId>
       <version>1.2.17</version>