Remove Jose's quote as it's outdated

README.md

@@ -4,8 +4,6 @@
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-> Membrane Framework - if you asked me what it is, I have no idea. _- Jose Valim in [ElixirConf 2018 Keynote](https://www.youtube.com/watch?v=m7TWMFtDwHg&feature=youtu.be&t=11m18s)_
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 Multimedia processing framework that focuses on reliability, concurrency and scalability.
 
 An easy to use abstraction layer for assembling mostly server-side applications that have to consume, produce or process multimedia streams.