LibWeb/CSS: Remove now-empty PercentageOr.cpp

All the code here was removed in commit
c282138fd0

Libraries/LibWeb/CMakeLists.txt

@@ -101,7 +101,6 @@ set(SOURCES
     CSS/Parser/Tokenizer.cpp
     CSS/Parser/Types.cpp
     CSS/ParsedFontFace.cpp
-    CSS/PercentageOr.cpp
     CSS/PreferredColorScheme.cpp
     CSS/PreferredContrast.cpp
     CSS/PreferredMotion.cpp

Libraries/LibWeb/CSS/PercentageOr.cpp

@@ -1,11 +0,0 @@
-/*
- * Copyright (c) 2022-2023, Sam Atkins <atkinssj@serenityos.org>
- *
- * SPDX-License-Identifier: BSD-2-Clause
- */
-
-#include "PercentageOr.h"
-
-namespace Web::CSS {
-
-}

Meta/gn/secondary/Userland/Libraries/LibWeb/CSS/BUILD.gn

@@ -51,7 +51,6 @@ source_set("CSS") {
     "MediaQueryList.cpp",
     "MediaQueryListEvent.cpp",
     "ParsedFontFace.cpp",
-    "PercentageOr.cpp",
     "PreferredColorScheme.cpp",
     "PreferredContrast.cpp",
     "PreferredMotion.cpp",