[MDEP-869] remove unused collections dependency (#342)

Author: elharo

pom.xml

@@ -255,11 +255,6 @@ under the License.
       <version>3.4.2</version>
     </dependency>
 
-    <dependency>
-      <groupId>org.apache.commons</groupId>
-      <artifactId>commons-collections4</artifactId>
-      <version>4.4</version>
-    </dependency>
     <dependency>
       <groupId>org.apache.commons</groupId>
       <artifactId>commons-lang3</artifactId>