TAMPA, Fla. — Back in 2015, Kyle Higashioka felt like his offense was going nowhere. The catcher looked at the big leagues to find someone who he could imitate to remodel his swing. The American League MVP that year was a slight infielder who showed incredible power, so Higashioka started taking part of Josh Donaldson’s swing to incorporate into his own. Now, Donaldson is just four lockers down in the Yankees’ spring training clubhouse and Higashioka is taking advantage of it. “I realized I couldn’t do the huge leg lift and all that stuff, but the underlying principles were the same. So mechan…