Remove REM units.

sky/engine/core/dom/StyleEngine.cpp

Index: sky/engine/core/dom/StyleEngine.cpp
diff --git a/sky/engine/core/dom/StyleEngine.cpp b/sky/engine/core/dom/StyleEngine.cpp
index 0f4d91a2c1ac7d52825ff825e4c70e804a063737..0dcf2015dc1451844d8f83b4b63bf47911bf793c 100644
--- a/sky/engine/core/dom/StyleEngine.cpp
+++ b/sky/engine/core/dom/StyleEngine.cpp
@@ -47,7 +47,6 @@ StyleEngine::StyleEngine(Document& document)
     , m_isMaster(!document.importsController() || document.importsController()->master() == &document)
     , m_documentStyleSheetCollection(DocumentStyleSheetCollection::create(document))
     , m_documentScopeDirty(true)
-    , m_usesRemUnits(false)
     , m_ignorePendingStylesheets(false)
     // We don't need to create CSSFontSelector for imported document or
     // HTMLTemplateElement's document, because those documents have no frame.
@@ -236,8 +235,6 @@ void StyleEngine::updateActiveStyleSheets()
     }
     m_activeTreeScopes.removeAll(treeScopesRemoved);
 
-    m_usesRemUnits = documentStyleSheetCollection()->usesRemUnits();
-
     m_dirtyTreeScopes.clear();
     m_documentScopeDirty = false;
 }