"Eject card after import" has been removed from the latest version of the Lightroom.
If the Photos apps are opening by default when you are inserting the card in the mac.
Follow the instructions below
How to Stop Photos App Launching Automatically in OS X
- Connect the iPhone, camera, SD card, etc to the Mac and let Photos app launch itself as usual
- Under the “Import” tab of Photos app, look in the upper left corner to find the device name, this will indicate which hardware will no longer automatically activate Photos app
- Click the checkbox so that “Open Photos for this device” is no longer selected (likewise, toggling this on would enable Photos app to open itself again automatically when this device is connected)
- Quit out of Photos app, the change is immediate for that device – this can be switched back at any time in the same OS X Photos app screen
if camera eject has been removed, how do you eject or unmount your camera?
Use the operating system eject.
if camera eject has been removed
The Eject After Import option was removed in LR 6.2 / CC 2015.2 and restored in LR 6.3 / CC 2015.3. If you're not seeing Eject, then most likely you need to update to 6.4 / 2015.4. Do Help > System Info to see which version you have, and then do Help > Updates to get 6.4.