SEC-286: removed log4j dep as it is in the parent pom and tests run fine without it..

core/pom.xml

@@ -120,10 +120,6 @@
       <version>1.0.1</version>
       <scope>test</scope>
     </dependency>
-    <dependency>
-      <groupId>log4j</groupId>
-      <artifactId>log4j</artifactId>
-    </dependency>
   </dependencies>
 
   <build>
@@ -155,4 +151,4 @@
     </resources>
   </build>
 
-</project>
+</project>