Remove unused import (#2292)

Signed-off-by: Avgustin Marinov <[email protected]>

Author: avgustinmm

hawkbit-ddi/hawkbit-ddi-starter/src/main/java/org/eclipse/hawkbit/autoconfigure/ddi/ControllerDownloadSecurityConfiguration.java

@@ -36,7 +36,6 @@
 import org.springframework.security.config.annotation.web.builders.HttpSecurity;
 import org.springframework.security.config.annotation.web.configurers.AbstractHttpConfigurer;
 import org.springframework.security.config.http.SessionCreationPolicy;
-import org.springframework.security.core.Authentication;
 import org.springframework.security.web.SecurityFilterChain;
 import org.springframework.security.web.access.intercept.AuthorizationFilter;