asignatura-list.component1.html

<!-- COLUMNA DELETE -->
<ng-container matColumnDef="delete">
  <mat-header-cell *matHeaderCellDef>Eliminar</mat-header-cell>
  <mat-cell *matCellDef="let asignatura">
    <button mat-raised-button color="warn" (click)="remove(asignatura.id)">Eliminar</button>
  </mat-cell>
</ng-container>

asignatura-list.component2.html

<!-- COLUMNA DELETE -->
<ng-container matColumnDef="delete">
  <mat-header-cell *matHeaderCellDef>Eliminar</mat-header-cell>
  <mat-cell *matCellDef="let asignatura">
    <button mat-raised-button color="warn" (click)="remove(asignatura)">Eliminar</button>
  </mat-cell>
</ng-container>

AsignaturaListComponent1.ts

 remove(id) {
    this.asignaturaService.delete(id).then(() => {
      this.snackService.launch('Asignatura eliminada correctamente', 'Cerrar', 5000);
    })
  }

AsignaturaListComponent2.ts

 remove(asignatura) {
    this.asignaturaService.delete(asignatura.id).then(() => {
      this.snackService.launch('Asignatura eliminada correctamente', 'Cerrar', 5000);
    })
  }