Merge virtual mac-antialiasedtext and windows-directwrite test suites

LayoutTests/platform/win-xp/virtual/windows-directwrite/fast/text/format-control-expected.txt

Index: LayoutTests/platform/win-xp/virtual/windows-directwrite/fast/text/format-control-expected.txt
diff --git a/LayoutTests/platform/win-xp/virtual/windows-directwrite/fast/text/format-control-expected.txt b/LayoutTests/platform/win-xp/virtual/windows-directwrite/fast/text/format-control-expected.txt
deleted file mode 100644
index fd25eb01c9ecf823f49f3db8b7b9a6d95f24eb9d..0000000000000000000000000000000000000000
--- a/LayoutTests/platform/win-xp/virtual/windows-directwrite/fast/text/format-control-expected.txt
+++ /dev/null
@@ -1,28 +0,0 @@
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