Don't automatically stop the mortgage life insurance. If you are in good health and the amount covered is small, and the premium is high, it might be worth stopping. But if you have a health issue, the life insurance might be good value and worth keeping.
There is nothing complicated about keeping your deeds in your own house. Mark them as "Important do not throw out". The bank is more likely to misplace them than you are to lose them through a fire or through theft.
I suppose saving €120 a year in bank charges is a good return on €1,000 left on your mortgage.
But I would have an instinct to tidy up and simplify my affairs.
Brendan