[cssom-view-1] Remove unused behavior parameter

...from "determine the scroll-into-view position".

This isn't used, and seems to be a leftover from before this algorithm
was split out of "scroll a target into view".

cssom-view-1/Overview.bs

@@ -1462,7 +1462,6 @@ The <dfn attribute for=Element>currentCSSZoom</dfn> attribute must return the
 <div algorithm>
 
 To <dfn export>determine the scroll-into-view position</dfn> of a <var>target</var>, which is an <a for="/">Element</a>, [=pseudo-element=], or <a>Range</a>,
-with a scroll behavior <var>behavior</var>,
 a block flow direction position <var>block</var>,
 an inline base direction position <var>inline</var>,
 and a <a>scrolling box</a> <var>scrolling box</var>,
@@ -1526,7 +1525,7 @@ means to run these steps:
 1. For each ancestor element or <a>viewport</a> that establishes a <a>scrolling box</a> <var>scrolling box</var>,
     in order of innermost to outermost <a>scrolling box</a>, run these substeps:
     1. If the {{Document}} associated with <var>target</var> is not <a>same origin</a> with the {{Document}} associated with the element or <a>viewport</a> associated with <var>scrolling box</var>, terminate these steps.
-    1. Let <var>position</var> be the scroll position resulting from running the steps to <a>determine the scroll-into-view position</a> of <var>target</var> with <var>behavior</var> as the |scroll behavior|,
+    1. Let <var>position</var> be the scroll position resulting from running the steps to <a>determine the scroll-into-view position</a> of <var>target</var> with
         <var>block</var> as the |block flow position|, <var>inline</var> as the |inline base direction position| and <var>scrolling box</var> as the |scrolling box|.
     1. If <var>position</var> is not the same as <var>scrolling box</var>'s current scroll position, or <var>scrolling box</var> has an ongoing <a>smooth scroll</a>,
         1. <dl class=switch>