PublicDashboard: Remove Github Disucssion link (#73517)

* remove github disucssion link

* remove unused cx import

public/app/features/dashboard/components/ShareModal/SharePublicDashboard/CreatePublicDashboard/Description.tsx

@@ -1,5 +1,4 @@
 import { css } from '@emotion/css';
-import cx from 'classnames';
 import React from 'react';
 
 import { GrafanaTheme2 } from '@grafana/data/src';
@@ -11,18 +10,6 @@ export const Description = () => {
   return (
     <div className={styles.container}>
       <p className={styles.description}>Currently, we don’t support template variables or frontend data sources</p>
-      <p className={styles.description}>
-        We&apos;d love your feedback. To share, please comment on this{' '}
-        <a
-          href="https://github.com/grafana/grafana/discussions/49253"
-          target="_blank"
-          rel="noreferrer"
-          className={cx('text-link', styles.description)}
-        >
-          GitHub discussion
-        </a>
-        .
-      </p>
     </div>
   );
 };