remove obsolete imports

bubble-server/src/test/java/bubble/test/promo/MultiplePromotionsTest.java

@@ -4,10 +4,8 @@
  */
 package bubble.test.promo;
 
-import bubble.auth.PromoCodePolicy;
 import bubble.test.payment.PaymentTestBase;
 import lombok.extern.slf4j.Slf4j;
-import org.junit.Before;
 import org.junit.Test;
 
 @Slf4j