I would suggest you lose....The gaiters, un-necessary throw backs to a bye-gone era. There only real purpose is to stop your trousers drying out properly.
You don't need a knife, fork and spoon. A spoon is perfectly sufficient on it's own.
If you have zip-off trousers, you can ditch the shorts.
What is the large pack towel for? Let things drain dry, or pop them back on the cooker while it's on, that will dry them much quicker. If you take a towel it will just be a minging festering germ blanket within 24 hours.
The mapcase, another pointless throwback, designed only to strangle you in the wind or make you fold the map so the bit you need you can't see!
I would suggest you add...A notebook and pencil, then you can keep a little journal, and write a goodbye note if it goes bad.
A tiny radio to keep the madness at bay.
Harveys waterproof maps, see mapcase comment above!
BUT....above all of that, and let's face it, even in these few replies you can see how different a bunch of randoms on the internet are with regard to their approach to walking. BUT....the one thing we will all agree is simply this
Know how to use whatever you take! There is absolutely no point in putting anything in that bag if you do not know and understand exactly what it does, when it is useful and why it should be there. This is especially true of your map and compass.Have a great walk, and good luck