fix(filesystems): fix checkstyle

Author: fhussonnois

connect-file-pulse-filesystems/filepulse-commons-fs/src/main/java/io/streamthoughts/kafka/connect/filepulse/fs/reader/text/RowFileInputIteratorBuilder.java

@@ -26,7 +26,6 @@
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
-import java.io.File;
 import java.nio.charset.Charset;
 import java.nio.charset.StandardCharsets;
 import java.util.function.Supplier;