NRI tax returns

I have some NRE FD's and NRO FD's exceeding well above 10L , though there is some tax refund for NRO deposit, but every year its troublesome to check and prepare the ITR.

Now In 26AS I have SFT-005 Transaction added for the same. 

Questions:

1. If I don't have any tax liability and I do not want refund is it still mandatory to fill returns ?

2. for nre-deposit renew do I need to report SFT transactions in ITR ?