remove unused beanutils dependency (#268)

diff --git a/pom.xml b/pom.xml
index dc320c1..f3cd223 100644
--- a/pom.xml
+++ b/pom.xml
@@ -326,12 +326,6 @@
       <version>${slf4j.version}</version>
       <scope>test</scope>
     </dependency>
-    <dependency>
-      <groupId>commons-beanutils</groupId>
-      <artifactId>commons-beanutils</artifactId>
-      <version>1.9.4</version>
-    </dependency>
-
   </dependencies>
 
   <build>