let admin can delete device on CE version

frontend/src/components/dialog/sysadmin-dialog/sysadmin-unlink-device-dialog.js

@@ -1,6 +1,6 @@
 import React from 'react';
 import PropTypes from 'prop-types';
-import { gettext } from '../../../utils/constants';
+import { gettext, isPro } from '../../../utils/constants';
 import { Button, Modal, ModalHeader, ModalBody, ModalFooter } from 'reactstrap';
 
 const propTypes = {
@@ -36,10 +36,12 @@ class SysAdminUnlinkDevice extends React.Component {
         <ModalHeader toggle={toggle}>{gettext('Unlink device')}</ModalHeader>
         <ModalBody>
           <p>{gettext('Are you sure you want to unlink this device?')}</p>
+          {isPro &&
           <div className="d-flex align-items-center">
             <input id="delete-files" className="mr-1" type="checkbox" checked={inputChecked} onChange={this.handleInputChange} />
             <label htmlFor="delete-files" className="m-0">{gettext('Delete files from this device the next time it comes online.')}</label>
           </div>
+          }
         </ModalBody>
         <ModalFooter>
           <Button color="secondary" onClick={toggle}>{gettext('Cancel')}</Button>