Of course it won't affect Bitcoin. It may sound harsh, but Nepal is an utter insignificant country that will never be able to contribute to anything crypto related - no one in the western world will lose a second of sleep over this non news. Such actions point out the weakness of the government there, and directly also that there is a whole lot of corruption going on, which they at all cost want to keep thriving. If people there want to buy themselves into Bitcoin or whatever other crypto currency, there will always be a sufficient way for them to do so (think about the peer to peer market) - not even an entire crypto ban can stop this.