[New Multicolumn] Remove unnecessary calls to setRegionBasedColumnsEnabled.

LayoutTests/fast/multicol/widows2.html

Index: LayoutTests/fast/multicol/widows2.html
diff --git a/LayoutTests/fast/multicol/widows2.html b/LayoutTests/fast/multicol/widows2.html
index b240319e7ffdccc15711f41f5816bf5915989a46..8ee45abb1d1e2070468cb0d63e8aea31026aa064 100644
--- a/LayoutTests/fast/multicol/widows2.html
+++ b/LayoutTests/fast/multicol/widows2.html
@@ -2,8 +2,6 @@
 <script src="../../resources/js-test.js"></script>
 <script>
     description("Test column balancer behavior when widows requirements are high, and there are so many lines that there's no need for early breaks to honor widows");
-    if (window.internals)
-        internals.settings.setRegionBasedColumnsEnabled(true);
 </script>
 <p>There should be 6 lines in the first column, 5 in the second and 5 in the last one.</p>
 <div id="mc" style="-webkit-columns:3; columns:3; -webkit-column-rule:solid; line-height:50px;">