code: public void removeAttribute(String arg0) {
          // 321485
          if (TraceComponent.isAnyTracingEnabled()&&logger.isLoggable (Level.FINE)) {  //306998.15
              logger.logp(Level.FINE, CLASS_NAME,"removeAttribute", "this->"+this+": "+" name --> " + arg0);
          }
          if (WCCustomProperties.CHECK_REQUEST_OBJECT_IN_USE){
              checkRequestObjectInUse();
          }
          Object oldValue = _srtRequestHelper._attributes.remove(arg0);
          if (oldValue != null) {
              this.attributeRemoved(arg0, oldValue);
          }
      }
docs: /* (non-Javadoc)
  @see javax.servlet.ServletRequest#removeAttribute(java.lang.String)