[svg2] Exclude <pattern> from having x and y presentation attributes

LayoutTests/svg/zoom/xy-getcomputedstyle.html

Index: LayoutTests/svg/zoom/xy-getcomputedstyle.html
diff --git a/LayoutTests/svg/zoom/xy-getcomputedstyle.html b/LayoutTests/svg/zoom/xy-getcomputedstyle.html
index d79c34136b08c9740735e352c096868c94e6f871..e38e3301c76cefd6c5f6b1646bd0108717c95510 100644
--- a/LayoutTests/svg/zoom/xy-getcomputedstyle.html
+++ b/LayoutTests/svg/zoom/xy-getcomputedstyle.html
@@ -10,7 +10,6 @@
 	<rect class="test" x="37px" y="50%" width="100" height="100"/>
 	<use class="test" x="17" y="51mm" xlink:href="#circle"/>
 	<svg class="test" x="22%" y="4cm" width="100" height="100"/>
-	<pattern class="test" x="27px" y="2in" width="100" height="100"/>
 	<mask class="test" x="15pc" y="27pt"/>
 	<image class="test" y="57"/>
 	<foreignObject class="test" x="32%" y="1"/>
@@ -22,7 +21,6 @@
 		[ "37px", "50%" ],
 		[ "17px", "192.755905151367px" ],
 		[ "22%", "151.181106567383px" ],
-		[ "27px", "192px" ],
 		[ "240px", "36px" ],
 		[ "0px", "57px" ],
 		[ "32%", "1px" ],