chore: remove incorrect information in unenroll popup

src/containers/UnenrollConfirmModal/components/ConfirmPane.jsx

@@ -17,7 +17,6 @@ export const ConfirmPane = ({
   return (
     <>
       <h4>{formatMessage(messages.confirmHeader)}</h4>
-      <p>{formatMessage(messages.confirmText)}</p>
       <ActionRow>
         <Button variant="tertiary" onClick={handleClose}>
           {formatMessage(messages.confirmCancel)}

src/containers/UnenrollConfirmModal/components/__snapshots__/ConfirmPane.test.jsx.snap

@@ -5,9 +5,6 @@ exports[`UnenrollConfirmModal ConfirmPane snapshot 1`] = `
   <h4>
     Unenroll from course?
   </h4>
-  <p>
-    Progress that you've made so far will not be saved
-  </p>
   <ActionRow>
     <Button
       onClick={[MockFunction props.handleClose]}

src/containers/UnenrollConfirmModal/components/messages.js

@@ -7,11 +7,6 @@ export const messages = StrictDict({
     description: 'Header for confirm unenroll modal',
     defaultMessage: 'Unenroll from course?',
   },
-  confirmText: {
-    id: 'learner-dash.unenrollConfirm.confirm.text',
-    description: 'Content for confirm unenroll modal',
-    defaultMessage: `Progress that you've made so far will not be saved`,
-  },
   confirmCancel: {
     id: 'learner-dash.unenrollConfirm.confirm.cancel',
     description: 'Cancel action for confirm unenroll modal',