chore[1300]: added back Button

Author: ashanmugavel

frontend/src/app/modules/shared/modules/relations/presentation/part-relation.component.ts

@@ -29,7 +29,7 @@ import {
   OnInit,
   ViewEncapsulation,
 } from '@angular/core';
-import { ActivatedRoute, Router } from '@angular/router';
+import { ActivatedRoute } from '@angular/router';
 import { Part } from '@page/parts/model/parts.model';
 import { State } from '@shared/model/state';
 import { View } from '@shared/model/view.model';