Remove @Override from Interfaces

This is necessary to ensure the code compiles in Eclipse.

Fixes gh-83

samples/websocket/src/main/java/sample/config/EmbeddedRedisConfig.java

@@ -38,13 +38,11 @@ public class EmbeddedRedisConfig {
         private RedisServer redisServer;
 
 
-        @Override
         public void afterPropertiesSet() throws Exception {
             redisServer = new RedisServer(Protocol.DEFAULT_PORT);
             redisServer.start();
         }
 
-        @Override
         public void destroy() throws Exception {
             if(redisServer != null) {
                 redisServer.stop();

samples/websocket/src/main/java/sample/security/UserRepositoryUserDetailsService.java

@@ -43,7 +43,6 @@ public class UserRepositoryUserDetailsService implements UserDetailsService {
     /* (non-Javadoc)
      * @see org.springframework.security.core.userdetails.UserDetailsService#loadUserByUsername(java.lang.String)
      */
-    @Override
     public UserDetails loadUserByUsername(String username)
             throws UsernameNotFoundException {
         User user = userRepository.findByEmail(username);
@@ -59,32 +58,26 @@ public class UserRepositoryUserDetailsService implements UserDetailsService {
             super(user);
         }
 
-        @Override
         public Collection<? extends GrantedAuthority> getAuthorities() {
             return AuthorityUtils.createAuthorityList("ROLE_USER");
         }
 
-        @Override
         public String getUsername() {
             return getEmail();
         }
 
-        @Override
         public boolean isAccountNonExpired() {
             return true;
         }
 
-        @Override
         public boolean isAccountNonLocked() {
             return true;
         }
 
-        @Override
         public boolean isCredentialsNonExpired() {
             return true;
         }
 
-        @Override
         public boolean isEnabled() {
             return true;
         }

samples/websocket/src/main/java/sample/websocket/WebSocketConnectHandler.java

@@ -38,7 +38,6 @@ public class WebSocketConnectHandler<S> implements ApplicationListener<SessionCo
         this.repository = repository;
     }
 
-    @Override
     public void onApplicationEvent(SessionConnectEvent event) {
         MessageHeaders headers = event.getMessage().getHeaders();
         Principal user = SimpMessageHeaderAccessor.getUser(headers);

samples/websocket/src/main/java/sample/websocket/WebSocketDisconnectHandler.java

@@ -34,7 +34,6 @@ public class WebSocketDisconnectHandler<S> implements ApplicationListener<Sessio
         this.repository = repository;
     }
 
-    @Override
     public void onApplicationEvent(SessionDisconnectEvent event) {
         String id = event.getSessionId();
         if(id == null) {