[css-color-4] Remove BOM.

Author: tabatkins

css-color/Overview.bs

@@ -1,4 +1,4 @@
-<h1>CSS Color Module Level 4</h1>
+<h1>CSS Color Module Level 4</h1>
 
 <pre class=metadata>
 Status: ED
@@ -137,7 +137,7 @@ Representing sRGB Colors: the <<color>> type</h2>
 Notes On Using Colors</h3>
 
 	Although colors can add significant amounts of information to
-	documents and make them more readable, color by itself should not be the sole 
+	documents and make them more readable, color by itself should not be the sole
 	means to convey important information. Please consider the
 	W3C Web Content Accessibility Guidelines [[WCAG20]] when including color in your documents.