Can I remove dropper seatpost of the Lapierre Edge 327 plus?
Photos on google look like internal hose routing. If the hose from the lever at the handlebar goes inside the frame, that’s going be slightly more difficult for a thief to remove the dropper post. It will also mean you can’t quicky remove the post for peace of mind. 

But don’t underestimate thieves, they don’t care if they break your bike, they are normally intelligent and possibly desperate. If they cut the hose and steal your stuff, they’ll probably know someone who can buy it and fix it. So assume they’ll take it if they want it. 

Better to leave your bike somewhere you feel safe.