No ticket. Update support comments to reflect current state of affairs.

src/attributes/support.js

@@ -9,7 +9,7 @@ define([
 
 	input.type = "checkbox";
 
-	// Support: Safari 5.1, iOS 5.1, Android 4.x, Android 2.3
+	// Support: iOS 5.1, Android 4.x, Android 2.3
 	// Check the default checkbox/radio value ("" on old WebKit; "on" elsewhere)
 	support.checkOn = input.value !== "";
 

src/core.js

@@ -342,7 +342,7 @@ jQuery.extend({
 		if ( obj == null ) {
 			return String( obj );
 		}
-		// Support: Safari <= 5.1 (functionish RegExp)
+		// Support: Android < 4.0, iOS < 6 (functionish RegExp)
 		return typeof obj === "object" || typeof obj === "function" ?
 			class2type[ toString.call(obj) ] || "object" :
 			typeof obj;

src/css.js

@@ -303,9 +303,9 @@ curCSS = function( elem, name, _computed ) {
 			ret = jQuery.style( elem, name );
 		}
 
-		// Support: Safari 5.1
+		// Support: iOS < 6
 		// A tribute to the "awesome hack by Dean Edwards"
-		// Safari 5.1.7 (at least) returns percentage for a larger set of values, but width seems to be reliably pixels
+		// iOS < 6 (at least) returns percentage for a larger set of values, but width seems to be reliably pixels
 		// this is against the CSSOM draft spec: http://dev.w3.org/csswg/cssom/#resolved-values
 		if ( rnumnonpx.test( ret ) && rmargin.test( name ) ) {
 

src/manipulation/support.js

@@ -19,7 +19,7 @@ define([
 
 	fragment.appendChild( input );
 
-	// Support: Safari 5.1, Android 4.x, Android 2.3
+	// Support: iOS 5.1, Android 4.x, Android 2.3
 	// old WebKit doesn't clone checked state correctly in fragments
 	support.checkClone = fragment.cloneNode( true ).cloneNode( true ).lastChild.checked;
 })();

test/unit/core.js

@@ -383,7 +383,6 @@ test("isFunction", function() {
 	ok( !jQuery.isFunction( 0 ), "0 Value" );
 
 	// Check built-ins
-	// Safari uses "(Internal Function)"
 	ok( jQuery.isFunction(String), "String Function("+String+")" );
 	ok( jQuery.isFunction(Array), "Array Function("+Array+")" );
 	ok( jQuery.isFunction(Object), "Object Function("+Object+")" );