Google Earth for the iPad and iPhone saves KML files (such as ForeFlight Track Logs) that are imported, so if you export more than one Track Log KML from ForeFlight Mobile, you end up seeing multiple Track Logs in Google Earth.
Follow these steps to hide or remove a track log KML in Google Earth:
STEP 1. Tap the MENU button (three stacked lines) in the upper-left corner of the screen.
Image 1. Tap on the MENU button.
STEP 2. Tap on MY PLACES.
Image 2. Tap on MY PLACES.
STEP 3. Tap on a track log in the list so that it's highlighted in blue. To hide it, tap the "eyeball" button on the far right. To delete it, tap the "trash can" button at the top of the list.
Image 3. Highlight a track log and then hide or delete it.