India's protectionist regulations are exhausting for its trade partners. It’s both a surprise and a relief that some are now being rolled back, says Mihir Sharma for Bloomberg Opinion. NEW DELHI: About a decade ago, the Indian government quietly turned protectionist. But now, there are some signs of a rethink – particularly on insidious non-tariff barriers that had hurt not just foreign companies, but consumers and exporters.  After Prime Minister Narendra Modi took office, the finance