Fix imports

Author: kobylynskyi

src/test/java/com/kobylynskyi/graphql/codegen/TestUtils.java

@@ -7,10 +7,6 @@
 import java.io.File;
 import java.io.FileNotFoundException;
 import java.io.IOException;
-import java.nio.file.Files;
-import java.nio.file.OpenOption;
-import java.nio.file.Paths;
-import java.nio.file.StandardOpenOption;
 import java.time.ZonedDateTime;
 import java.util.Arrays;