update-去掉无用包

src/main/java/com/mooctest/service/BlockchainService.java

@@ -8,7 +8,6 @@ import com.mooctest.data.FinalReportDTO;
 import com.mooctest.data.TaskDTO;
 import com.mooctest.model.Bug;
 import com.mooctest.model.FinalReport;
-import com.sun.javafx.tk.Toolkit;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.beans.factory.annotation.Value;
 import org.springframework.http.HttpEntity;