Remove two deprecated APIs

[vladimir-rangelov]

Both APIs are bidirectional compatible, but the API signatures are slightly different, which is an API breaking change, and this is the reason for their removal.

Here is the change -
unidirectional:

function entityInfo(data)
function purchasedContent(data)

bidirectional:
function entityInfo(entityId, assedId)
function purchasedContent(offeringType, programType)

[alkalinecoffee]

Please provide a description in this PR as to why these are being removed (for historical purposes).

There are some schemas here that we can probably clean up now that the methods are gone:

- #/components/schemas/EntityInfoFederatedResponse
    - https://meta.comcast.com/firebolt/discovery#/definitions/EntityInfoResult
- #/components/schemas/EntityInfoFederatedRequest
    - #/components/schemas/EntityInfoParameters
- #/components/schemas/EntityInfoResult
- #/components/schemas/PurchasedContentFederatedRequest
    - #/components/schemas/FederatedRequest
- #/components/schemas/PurchasedContentParameters
- #/components/schemas/PurchasedContentFederatedResponse
    - #/components/schemas/FederatedRequest
    - #/components/schemas/PurchasedContentResult
- #/components/schemas/PurchasedContentResult

These could be removed but I'm hesitant to do so right now as they seem useful:

- https://meta.comcast.com/firebolt/entertainment/EntityInfo
- https://meta.comcast.com/firebolt/entertainment#/definitions/OfferingType

[vladimir-rangelov]

Yes, I removed the unused schemas