Fix checkstyle issues for Form Recognizer (Azure#36589)

Author: samvaity

sdk/formrecognizer/azure-ai-formrecognizer/src/samples/java/com/azure/ai/formrecognizer/AnalyzeBusinessCardAsync.java

@@ -22,7 +22,6 @@
 import java.io.IOException;
 import java.io.InputStream;
 import java.nio.file.Files;
-import java.util.Arrays;
 import java.util.Collections;
 import java.util.List;
 import java.util.Map;

sdk/formrecognizer/azure-ai-formrecognizer/src/samples/java/com/azure/ai/formrecognizer/AnalyzeBusinessCardFromUrlAsync.java

@@ -17,7 +17,6 @@
 import reactor.core.publisher.Mono;
 
 import java.io.IOException;
-import java.util.Arrays;
 import java.util.Collections;
 import java.util.List;
 import java.util.Map;