fix unused import

src/MusicalScore/Graphical/VexFlow/VexFlowMusicSheetCalculator.ts

@@ -48,7 +48,6 @@ import { InstantaneousTempoExpression } from "../../VoiceData/Expressions";
 import { AlignRestOption } from "../../../OpenSheetMusicDisplay";
 import { VexFlowStaffLine } from "./VexFlowStaffLine";
 import { EngravingRules } from "../EngravingRules";
-import { AlignmentManager } from "./AlignmentManager";
 import { VexflowStafflineNoteCalculator } from "./VexflowStafflineNoteCalculator";
 
 export class VexFlowMusicSheetCalculator extends MusicSheetCalculator {