Tests: Remove a workaround for a Firefox XML parsing issue

Firefox 96-100 used to report the column number smaller by 2 than it should
in the `parsererror` element generated for invalid XML documents. Since that
version range is unsupported now and it includes no ESR versions, the workaround
can now be dropped.

Closes gh-5109
Ref gh-5018

(cherry picked from commit e7ffe1f135dfa68ce3065b2bd319a29a57866dc6)

diff --git a/test/unit/core.js b/test/unit/core.js
index a2fe504fc7ab086abaeb6ebaae9f13422b705997..6e6795601bdfa27fd38db55a67ac4ece4d1b735b 100644 (file)
--- a/test/unit/core.js
+++ b/test/unit/core.js
@@ -1454,13 +1454,7 @@ QUnit[
        column = columnMatch && columnMatch[ 1 ];
 
        assert.strictEqual( line, "1", "reports error line" );
-
-       // Support: Firefox 96-97+
-       // Newer Firefox may report the column number smaller by 2 than it should.
-       // Accept both values until the issue is fixed.
-       // See https://bugzilla.mozilla.org/show_bug.cgi?id=1751796
-       assert.ok( [ "9", "11" ].indexOf( column ) > -1, "reports error column" );
-       // assert.strictEqual( column, "11", "reports error column" );
+       assert.strictEqual( column, "11", "reports error column" );
 } );
 
 testIframe(