Bug 1828381 - Make accessible/windows/sdn buildable outside of a unified build environment r=andi

Differential Revision: https://phabricator.services.mozilla.com/D175594

accessible/windows/sdn/moz.build

@@ -22,5 +22,3 @@ LOCAL_INCLUDES += [
 include("/ipc/chromium/chromium-config.mozbuild")
 
 FINAL_LIBRARY = "xul"
-
-REQUIRES_UNIFIED_BUILD = True