Campaign Creation: Remove Ads Audience field

[joemcgill]

Part of #2459

Today we show “Ads audience” (see screenshot below) but instead, we can remove it and target all countries selected during product feed configuration (step 2).

Acceptance Criteria

• The campaign creation step no longer shows the audience section during onboarding.
• When a new campaign is created, the values selected during step 2 are used for the campaign.

Implementation Brief

The AudienceSection component can be removed from the PaidAdsSetupSections component. Update the PaidAdsSetupSections component so that it initializes the paidAds state with targetAudience data that was saved in step 2. We can probably use the getTargetAudience selector to get this data, but will need to make sure that it then gets formatted in a way that is expected when the form is submitted.

Test Coverage

Update the E2E tests for tests/e2e/specs/setup-mc/step-4-complete-campaign.test.js to remove tests related to the audience field.

[eason9487]

1. Are there any side effects that we would need to be aware of when using target audience data from MC for the Ads campaign?

I think there shouldn't be any side effects because the target audiences from MC are originally the default value when the starting campaign creation.

[eason9487]

There is a code conflict so I moved this ticket to the In Progress status. I believe the PR won't need another round of code reviews after resolving the code conflict.

[asvinb]

Thanks @eason9487 . Merge conflicts fixed. As per your comment, assigning task to @fblascogarma for UAT.