Remove unused dependency

Change-Id: I36550ef29e34cb461f35af9cd17993af1e92e94c
diff --git a/pom.xml b/pom.xml
index d3de578..5ed5997 100644
--- a/pom.xml
+++ b/pom.xml
@@ -700,11 +700,6 @@
       <version>${findbugs.version}</version>
     </dependency>
     <dependency>
-      <groupId>com.fasterxml.jackson.core</groupId>
-      <artifactId>jackson-annotations</artifactId>
-      <version>2.4.0</version>
-    </dependency>
-    <dependency>
       <groupId>com.codahale.metrics</groupId>
       <artifactId>metrics-core</artifactId>
       <version>${metrics.version}</version>
@@ -736,11 +731,6 @@
       <version>2.0.25</version>
     </dependency>
     <dependency>
-      <groupId>com.googlecode.concurrentlinkedhashmap</groupId>
-      <artifactId>concurrentlinkedhashmap-lru</artifactId>
-      <version>1.4</version>
-    </dependency>
-    <dependency>
       <!-- dependency to old version of netty? -->
       <groupId>io.netty</groupId>
       <artifactId>netty</artifactId>