Revert "Add "contents" and "scroll-position" keywords to local names"

This reverts commit 6089ea4.

Author: SimonSapin

atoms/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "html5ever-atoms"
-version = "0.2.1"
+version = "0.2.0"
 authors = [ "The html5ever Project Developers" ]
 license = "MIT / Apache-2.0"
 repository = "https://github.com/servo/html5ever"

atoms/local_names.txt

@@ -183,7 +183,6 @@ compose
 condition
 conjugate
 content
-contents
 contentScriptType
 contentStyleType
 contenteditable
@@ -792,7 +791,6 @@ scriptminsize
 scriptsizemultiplier
 scrolldelay
 scrolling
-scroll-position
 sdev
 seamless
 sec