AppServer: Remove unnecessary 'unused' suppressions

Change-Id: Ic27106f38af14833147f739179c3ef8ec6b6ee31
Signed-off-by: David Pursehouse <david.pursehouse@gmail.com>

org.eclipse.jgit.junit.http/src/org/eclipse/jgit/junit/http/AppServer.java

@@ -185,13 +185,11 @@ public class AppServer {
 			putUser(username, new Password(password), new String[] { role });
 		}
 
-		protected String[] loadRoleInfo(
+		protected String[] loadRoleInfo(KnownUser user) {
-				@SuppressWarnings("unused") KnownUser user) {
 			return null;
 		}
 
-		protected KnownUser loadUserInfo(
+		protected KnownUser loadUserInfo(String usrname) {
-				@SuppressWarnings("unused") String usrname) {
 			return null;
 		}
 	}