Step 1: Login to Bridgit on the web at closeout.gobridgit.com.
Step 2: Click the gear icon in the top left corner to access Project Settings
Step 3: Click "Tags"
Step 4: When you see the tag you want to delete, click the "X" on the right-hand side of the page to remove it.
NOTE: Deleting a tag will remove it from all tasks that the tag has been added to.