Revert "Add onHand to product response"

[lchrusciel]

Reverts #503

[mamazu]

What's the problem with that?

[alexander-schranz]

@mamazu As mentioned in #508 we should expose only availability flag and not how many are onHand or onHold. As I think onHand and onHold could be also sensitive data for a shop or?

[mamazu]

There are two reasons why they should be reverted:

1. the availability is based on more factors than just on hand and on hold quantity.
2. @lchrusciel and I agreed that this might not be part of the 1.1 version as currently we are in a feature freeze phase.

[alexander-schranz]

@mamazu

1. yeah thats what I wanted to say.
2. you mean not part of 1.0?

[mamazu]

Yes, currently we are just trying to stabalize the current version and not introduce any new features.

[mamazu]

Thanks, Łukasz! 🎉