remove unused import

Author: Clickism

core/src/main/java/de/clickism/configured/Config.java

@@ -10,7 +10,6 @@
 import de.clickism.configured.format.ConfigFormatProvider;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
-import sun.reflect.ReflectionFactory;
 
 import java.io.File;
 import java.util.*;