Remove oldIE styleFloat detect.

src/css.js

@@ -172,7 +172,7 @@ jQuery.extend({
 	// setting or getting the value
 	cssProps: {
 		// normalize float css property
-		"float": jQuery.support.cssFloat ? "cssFloat" : "styleFloat"
+		"float": "cssFloat"
 	},
 
 	// Get and set the style property on a DOM Node

src/support.js

@@ -21,10 +21,6 @@ jQuery.support = (function() {
 
 	a.style.cssText = "float:left;opacity:.5";
 	support = {
-		// Verify style float existence
-		// (IE uses styleFloat instead of cssFloat)
-		cssFloat: !!a.style.cssFloat,
-
 		// Check the default checkbox/radio value ("" on WebKit; "on" elsewhere)
 		checkOn: !!input.value,