Bug 1856338 - Part 12: Remove fixme comment for spec bug in Duration.…

…p.round. r=sfink

Fixed in <tc39/proposal-temporal#2659>.

Differential Revision: https://phabricator.services.mozilla.com/D189783

UltraBlame original commit: 70af7f87744e66e7ac623c4fe246e41aad2c72e1

js/src/builtin/temporal/Duration.cpp

@@ -44114,36 +44114,6 @@ false
 }
 /
 /
-FIXME
-:
-spec
-issue
--
-relativeTo
-can
-be
-undefined
-in
-which
-case
-it
-'
-s
-not
-/
-/
-valid
-to
-test
-for
-the
-presence
-of
-internal
-slots
-.
-/
-/
 Steps
 26
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