Remove optional qualifier from apacheds dependencies in LDAP sample.

samples/ldap/pom.xml

@@ -50,14 +50,12 @@
             <artifactId>apacheds-core</artifactId>
             <version>1.5.5</version>
             <scope>compile</scope>
-            <optional>true</optional>
         </dependency>
         <dependency>
             <groupId>org.apache.directory.server</groupId>
             <artifactId>apacheds-server-jndi</artifactId>
             <version>1.5.5</version>
             <scope>compile</scope>
-            <optional>true</optional>
         </dependency>
         <dependency>
             <groupId>org.slf4j</groupId>