Remove unnecessary synchronization

Signed-off-by: Jacob Perron <[email protected]>

Author: jacobperron

rcljava/src/main/java/org/ros2/rcljava/action/ActionServerImpl.java

@@ -86,14 +86,14 @@ public GoalHandleImpl(
     /**
      * {@inheritDoc}
      */
-    public synchronized action_msgs.msg.GoalInfo getGoalInfo() {
+    public action_msgs.msg.GoalInfo getGoalInfo() {
       return this.goalInfo;
     }
 
     /**
      * {@inheritDoc}
      */
-    public synchronized MessageDefinition getGoal() {
+    public MessageDefinition getGoal() {
       return this.goal;
     }
 
@@ -164,7 +164,7 @@ public synchronized final void dispose() {
      * {@inheritDoc}
      */
     public synchronized final long getHandle() {
-      return handle;
+      return this.handle;
     }
   }  // class GoalHandleImpl