Remove NSTemporaryExceptionAllowsInsecureHTTPLoads

[aaronschachter]

Added this in #735 to load any given URL from our News Feed -- no longer required as we're loading news in external web browser instead (#975) or potentially refactoring with SFSafariViewController in vLater

[aaronschachter]

Bogus, we're can't do this yet because our image_url is http in our Wordpress uploads: https://live-ltd-news.pantheon.io/api/get_category_index/

[aaronschachter]

Seems like using the processed images data instead of the raw url in our Posts endpoint is the way to get to https images. Needs some LDT News investigation 🔍