Remove paragraph that talks about sorting with Object Search Endpoint

[Bret Jordan <Bret_Jordan@symantec.com>]

All,

Does anyone object to removing the paragraph that is described in issue 51? 

https://github.com/oasis-tcs/cti-taxii2/issues/51

Basically, it is a left over paragraph from when we had an "Object Search" endpoint. That endpoint was removed before the TAXII 2.0 work was finished, however, we missed removing this paragraph. The paragraph says, and is located in section 3.3:

"For the Object Search Endpoint, objects MUST be sorted in ascending order by the date the object first appeared in object search (i.e., the added date). If an object would appear multiple times, all appearances after the first appearance MUST be omitted from the result. That is, if an object would have appeared first in the list and again halfway down, only the first entry should be present in the result."

Bret