removed unnecessary import

Author: dghgit

pg/src/main/java/org/bouncycastle/bcpg/PublicKeyPacket.java

@@ -1,7 +1,5 @@
 package org.bouncycastle.bcpg;
 
-import sun.jvm.hotspot.types.JBooleanField;
-
 import java.io.ByteArrayOutputStream;
 import java.io.IOException;
 import java.util.Date;