Remove gg_oauth_parameter_t
Review Request #525 — Created Feb. 25, 2021 and submitted
Use variadic function gg_oauth_generate_request instead.
This is a repost of https://reviews.imfreedom.org/r/516/ but reviewboard wouldn't let me update it directly.
Original patch was from Arkadiy Illarionov with updates from Gary Kramlich.
Compile only.
