去掉MIDI支持

src/views/music-library/music-sheet/modal/music-operationV2.tsx

@@ -473,8 +473,6 @@ export default defineComponent({
                   musicSheetId: props.data.id,
                   audioPlayType: 'PLAY'
                 })
-              }
-              if (forms.musicSheetSoundList_all_subject) {
                 existYzFile = true
               }
             } else {