I wouldn't recommend it. I went to a physics revision course and they said that electricity questions have actually been getting easier over the years while questions on light/heat (the easier/first couple of chapters) are getting harder... I'd say if you really wanted to avoid it then you should learn off the modern physics well in place of it
Avoiding Magnetism is fair enough I guess since that can get hard, but the whole of Electricity? It's comes up every year and isn't even that long or hard. Mostly learning off and there's less of that there than in Modern Physics! Definitely don't leave that out, Modern Physics, Magnetism and Heat/Temperature are the real hard ones, leave one of them out if you want.
I avoided elec up to my pres. I then realised that electricity is a huge part of the course and i learned all the theory and calculations in about a week and found it actually to be easier than other sections! Id really recommend it - the calculations are quite easy when you get the hang of them and it can come up in more than 1 q