Create delete bank relationship flow

[ilikeadodachacha]

• this must update calendar events accordingly

[multani7871]

@ilikeadodachacha to clarify, this would be for the use case where user has added multiple bank relationships and wants to delete one of them while keeping the rest active?

[ilikeadodachacha]

@multani7871 affirmative

[multani7871]

Should have delete button in UI next to a given bank's name.

When button is clicked, deleteItems endpoint is called and the event is deleted from DB along with it's events being deleted from Plaid.