[SMX4-1602] Fix optional dependency in antlr 3.5.1 bundle

git-svn-id: https://svn.apache.org/repos/asf/servicemix/smx4/bundles/trunk/antlr-3.5.1@1536205 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/pom.xml b/pom.xml
index 0ece731..d301efa 100644
--- a/pom.xml
+++ b/pom.xml
@@ -55,7 +55,6 @@
             <groupId>${pkgGroupId}</groupId>
             <artifactId>${pkgArtifactId}</artifactId>
             <version>${pkgVersion}</version>
-            <optional>true</optional>
         </dependency>
 
         <!-- sources -->
@@ -64,7 +63,6 @@
             <artifactId>${pkgArtifactId}</artifactId>
             <version>${pkgVersion}</version>
             <classifier>sources</classifier>
-            <optional>true</optional>
         </dependency>
     </dependencies>