Remove obsolete CSSProperties.in -webkit- aliases.

sky/engine/core/css/CSSProperties.in

Index: sky/engine/core/css/CSSProperties.in
diff --git a/sky/engine/core/css/CSSProperties.in b/sky/engine/core/css/CSSProperties.in
index e3228328cb828acbfe3bacdda341024c01ed11c8..bcb28fb3d342d072654988de7d6a1d46fe822064 100644
--- a/sky/engine/core/css/CSSProperties.in
+++ b/sky/engine/core/css/CSSProperties.in
@@ -555,30 +555,3 @@ animation longhands=animation-name;animation-duration;animation-timing-function;
 -webkit-text-stroke longhands=-webkit-text-stroke-width;-webkit-text-stroke-color
 -webkit-transform-origin longhands=-webkit-transform-origin-x;-webkit-transform-origin-y;-webkit-transform-origin-z
 transition longhands=transition-property;transition-duration;transition-timing-function;transition-delay
-
-// Aliases; these map to the same CSSPropertyID
-// ALL OBSOLETE
--epub-caption-side alias_for=caption-side
--epub-text-emphasis alias_for=-webkit-text-emphasis
--epub-text-emphasis-color alias_for=-webkit-text-emphasis-color
--epub-text-emphasis-style alias_for=-webkit-text-emphasis-style
--epub-text-orientation alias_for=-webkit-text-orientation
--epub-word-break alias_for=word-break
--webkit-align-content alias_for=align-content
--webkit-align-items alias_for=align-items
--webkit-align-self alias_for=align-self
--webkit-border-bottom-left-radius alias_for=border-bottom-left-radius
--webkit-border-bottom-right-radius alias_for=border-bottom-right-radius
--webkit-border-top-left-radius alias_for=border-top-left-radius
--webkit-border-top-right-radius alias_for=border-top-right-radius
--webkit-box-sizing alias_for=box-sizing
--webkit-flex alias_for=flex
--webkit-flex-basis alias_for=flex-basis
--webkit-flex-direction alias_for=flex-direction
--webkit-flex-flow alias_for=flex-flow
--webkit-flex-grow alias_for=flex-grow
--webkit-flex-shrink alias_for=flex-shrink
--webkit-flex-wrap alias_for=flex-wrap
--webkit-justify-content alias_for=justify-content
--webkit-opacity alias_for=opacity
--webkit-order alias_for=order