Remove unused import

Author: koppor

jabkit/src/main/java/org/jabref/cli/CheckConsistency.java

@@ -4,7 +4,6 @@
 import java.io.OutputStreamWriter;
 import java.io.Writer;
 import java.nio.file.Path;
-import java.util.List;
 import java.util.Optional;
 import java.util.concurrent.Callable;