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I'm working on a WordPress website that has around 300 pages (not posts, pages), many of which have very little content and / or content that is super outdated with zero relevancy. The site has been up and running for 10 years and ranks well overall, 1st in many instances for competitive keywords. The company holds yearly events and works with various other companies who exhibit at their events. In their very early years, they created pages on their website for each of these companies, some of which don't even exist anymore. If I had to delete all of the pages that are deprecated there would only be 10 pages of the site left (with blog posts counted separately). Would it be safe to remove these pages and set a 301 redirect to a semi-related page without hurting the website rankings? Any and all advice appreciated!!