code: protected void removeFromCache(String cacheName, String key) {
          try {
              ICache cache = getCache(cacheName);
              if (cache != null) {
                  cache.delete(key);
              }
          } catch (CacheException e) {
              LOGGER.warn(e.getMessage(), e);
          }
      }
docs: Removes an entry from cache.
  
  @param cacheName
  @param key