Remove duplicate Accessibility header

Author: a2

docs/Accessibility.md

@@ -7,8 +7,6 @@ permalink: docs/accessibility.html
 next: nativemodulesios
 ---
 
-# Accessibility
-
 Accessibility on iOS encompasses many topics, but for many, accessibility is synonymous with VoiceOver, a technology available since iOS 3.0. It acts as a screen reader, allowing people with visual impairments to use their iOS devices. Click [here](https://developer.apple.com/accessibility/ios/) to learn more.
 
 ## Making Accessible Apps