feat:云教练音准与节奏计算逻辑调整

mec-biz/src/main/java/com/ym/mec/biz/service/impl/SoundCompareHandler.java

@@ -32,7 +32,6 @@ import org.springframework.web.socket.WebSocketSession;
 
 import javax.sound.sampled.UnsupportedAudioFileException;
 import java.io.File;
-import java.io.FileNotFoundException;
 import java.io.IOException;
 import java.io.RandomAccessFile;
 import java.math.BigDecimal;