Remove legacy Button Block

[gsambrotta]

In the code there is a button-block.component.ts which is not used anywhere.
It is confusing to have it there as we do have button in the UI but they are under the Action Block.

We should clean up the code and avoid further confusion.
We should remove:

• src/app/blocks/button-block

Remove it from here:
src/app/components/blocks-workflow/blocks-workflow.component.html

  97:    import {ButtonBlockComponent} from './blocks/button-block/button-block.component';

And here:
/home/anaketa/repos/Kendraio/kendraio-app/src/app/app.module.ts

  15: <app-button-block class="block-wrapper" *ngSwitchCase="'button'" [context]="context" [config]="block" [model]="models[i]" (output)="updateModel(i + 1, $event)"></app-button-block>

[CodeKrakken]

Agreed - if it definitely isn't used it should go. Are you sure it's obsolete?