chore: remove unused imports (#2542)

Signed-off-by: Alexandros Pappas <apappascs@gmail.com>

document-readers/tika-reader/src/test/java/org/springframework/ai/reader/tika/TikaDocumentReaderTests.java

@@ -21,7 +21,6 @@ import org.junit.jupiter.params.provider.CsvSource;
 import org.springframework.ai.reader.ExtractedTextFormatter;
 import static org.assertj.core.api.Assertions.assertThat;
 import static org.junit.jupiter.api.Assertions.assertFalse;
-import static org.junit.jupiter.api.Assertions.assertTrue;
 
 /**
  * @author Christian Tzolov