Remove Bulk Labels to Child Pages

Click more options icon and select Page Labels from the menu
Click Remove Bulk Labels tab from Page Labels screen and enter the name of the label(s) to be removed
Choose pages to remove labels
For Large Spaces

If a page contains too many child pages, please select "Parent page and all child pages will be affected" option.
A confirmation screen will be displayed on the following step. Click next to continue.
After removed and the process completed you will get a success message.

Label Manager for Confluence