Hello OtisMT2,
Thank you for posting in the Apple Support Communities. We're here to help with your iPad.
According to the section "Delete photos or videos" in the Apple Support article below, "If you add photos to your iPhone, iPad, or iPod touch by connecting your device to your computer, you can't delete them directly from your device in the Photos app. If you see the gray Trash button when you try to delete a photo from your iPhone, iPad, or iPod touch, you might need to stop syncing photos from your computer."
Delete photos on your iPhone, iPad, and iPod touch
We hope this information is useful. Kind regards.