Sorry this is probably a stupid question. I just overdosed my car with coolant by accident. I put it maybe half an inch over the "Hot" line. There seems to be plenty of room left in the reservoir. Do I have to remove this coolant? If so is there an easy way? Thanks pals.

No you don't have to remove it. It won't overflow. The full lines are just for reference so you can keep track of the level. Mine has been an inch over the full hot line for about a month since I last messed with the cooling system.

If you do want to remove some, you can always use a siphon or open the petcock for a little bit. Doing the latter won't drain the reservoir immediately but it will lower while you are driving.
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Leave it, you're fine. Just remember where it is hot and cold for reference.

Awesome thanks guys. Finally some good news for the day.

For accuracy, I've always preferred using a turkey baster - that way, I can still use what I've overfilled with, or just dispose of it properly.