Remove unused dependency

Author: mpv1989

ChangeLog.md

@@ -10,6 +10,7 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/) a
 
 - fixed compatibility of `ArangoCursor#filter` with Java 6
 - fixed replace-insert with `DocumentCreateOptions#overwrite(Boolean)` for `ArangoCollection#insertDocuments`
+- removed unused dependency
 
 ## [5.0.1] - 2018-09-25
 

pom.xml

@@ -204,11 +204,6 @@
 	</build>
 
 	<dependencies>
-		<dependency>
-			<groupId>io.netty</groupId>
-			<artifactId>netty-all</artifactId>
-			<version>4.1.29.Final</version>
-		</dependency>
 		<dependency>
 			<groupId>org.apache.httpcomponents</groupId>
 			<artifactId>httpclient</artifactId>