@Operation(summary = "Remove all trusted devices that have expired")
    @DeleteMapping(value = "/clean", produces = MediaType.APPLICATION_JSON_VALUE)
    public Integer clean() {
        cleanExpiredRecords();
        return HttpStatus.OK.value();
    }
Clean and remove expired records.

@return the integer
support/cas-server-support-trusted-mfa-core/src/main/java/org/apereo/cas/trusted/web/MultifactorAuthenticationTrustedDevicesReportEndpoint.java