Remove Odysee references from FAQ

[kauffj]

• Search non-archived FAQ content for occurrences of the word Odysee and remove them (https://github.com/lbryio/lbry.com/tree/master/content/faq).
• Remove or replace pictures of odysee.com with the equivalent picture from LBRY desktop.
• If an article is basically entirely about Odysee, work with @tzarebczan to upload it to https://odysee.com/@odyseehelp instead. Add a redirect for these articles to their new home.
• If removing a reference to Odysee would make a FAQ confusing for legacy users (most FAQ readers are Odysee users), add a frontmatter tag (odyseelegacy: true).
• When rendering a FAQ tagged odyseelegacy, add an element (a notice?) at the top of the FAQ that says something like "This article refers to LBRY Desktop or the LBRY network. Go to the [Odysee Help] page to learn about this subject on Odysee."
• If an article should be on both odysee.com and lbry.com, discuss with me how to approach this.