code: public static void removeJ2CIdentityService(J2CIdentityService j2cIdentityService) {
          if (j2cIdentityService != null) {
              j2cIdentityServices.remove(j2cIdentityService);
              if (TraceComponent.isAnyTracingEnabled() && tc.isDebugEnabled()) {
                  Tr.debug(tc, "A J2CIdentityService implementation was removed.", j2cIdentityService.getClass().getName());
              }
          }
      }
docs: Remove a J2CIdentityService reference. This method is called by
  ThreadIdentityManagerConfigurator when a J2CIdentityService leaves
  the OSGI framework.
  
  @param j2cIdentityService