Removed WONTFIX tests

LayoutTests/fast/canvas/canvas-gradient-addStop-error-expected.txt

Index: LayoutTests/fast/canvas/canvas-gradient-addStop-error-expected.txt
diff --git a/LayoutTests/fast/canvas/canvas-gradient-addStop-error-expected.txt b/LayoutTests/fast/canvas/canvas-gradient-addStop-error-expected.txt
deleted file mode 100644
index ab82695b4b0d61cf25c70e020548f068742b233d..0000000000000000000000000000000000000000
--- a/LayoutTests/fast/canvas/canvas-gradient-addStop-error-expected.txt
+++ /dev/null
@@ -1,15 +0,0 @@
-A couple of tests to ensure that adding a stop with an invalid color to a gradient throws exceptions normally, but not in dashboard.
-
-On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".
-
-
-Ensure exceptions are thrown in normal pages
-PASS gradient.addColorStop(1, 'rgb(NaN%, NaN%, NaN%)') threw exception Error: SyntaxError: DOM Exception 12.
-PASS gradient.addColorStop(1, 'rgb(NaN%, NaN%, NaN%)') threw exception Error: SyntaxError: DOM Exception 12.
-Switching to dashboard compatibility mode.  Invalid color strings should no longer cause an exception.
-PASS gradient.addColorStop(1, 'rgb(NaN%, NaN%, NaN%)') is undefined.
-PASS gradient.addColorStop(1, 'rgb(NaN%, NaN%, NaN%)') is undefined.
-PASS successfullyParsed is true
-
-TEST COMPLETE
-