[line-clamp] Unskip imported/w3c/web-platform-tests/css/css-overflow/line-clamp/webkit-line-clamp-018.html

https://bugs.webkit.org/show_bug.cgi?id=284243

Unreviewed gardening.

* LayoutTests/TestExpectations:

Canonical link: https://commits.webkit.org/287515@main

Author: alanbaradlay

LayoutTests/TestExpectations

@@ -3658,7 +3658,6 @@ imported/w3c/web-platform-tests/css/css-overflow/line-clamp/webkit-line-clamp-00
 imported/w3c/web-platform-tests/css/css-overflow/line-clamp/webkit-line-clamp-011.html [ ImageOnlyFailure ]
 imported/w3c/web-platform-tests/css/css-overflow/line-clamp/webkit-line-clamp-012.html [ ImageOnlyFailure ]
 imported/w3c/web-platform-tests/css/css-overflow/line-clamp/webkit-line-clamp-013.html [ ImageOnlyFailure ]
-imported/w3c/web-platform-tests/css/css-overflow/line-clamp/webkit-line-clamp-018.html [ ImageOnlyFailure ]
 imported/w3c/web-platform-tests/css/css-overflow/line-clamp/webkit-line-clamp-029.html [ ImageOnlyFailure ]
 imported/w3c/web-platform-tests/css/css-overflow/overflow-clip-margin-012.html [ ImageOnlyFailure ]
 imported/w3c/web-platform-tests/css/css-overflow/rounded-overflow-clip-visible.html [ ImageOnlyFailure ]