ICU-3009 remove unneeded clear()

X-SVN-Rev: 12428

icu4c/source/i18n/calendar.cpp

@@ -546,7 +546,6 @@ Calendar::createInstance(TimeZone* zone, const Locale& aLocale, UErrorCode& succ
   }
 
   // Now, reset calendar to default state:
-  c->clear();
   c->adoptTimeZone(zone); //  Set the correct time zone
   c->setTimeInMillis(getNow(), success); // let the new calendar have the current time.
   return c;