removed subsecond tests from JulianDayTest
removed subsecond tests from JulianDayTest

onekiloparsec/SwiftAA,onekiloparsec/SwiftAA,onekiloparsec/SwiftAA,alex-vasenin/SwiftAA,alex-vasenin/SwiftAA,onekiloparsec/SwiftAA,alex-vasenin/SwiftAA,alex-vasenin/SwiftAA,onekiloparsec/SwiftAA,alex-vasenin/SwiftAA