Merge virtual mac-antialiasedtext and windows-directwrite test suites

LayoutTests/platform/mac-snowleopard/virtual/mac-antialiasedtext/fast/text/international/bidi-neutral-directionality-paragraph-start-expected.txt

Index: LayoutTests/platform/mac-snowleopard/virtual/mac-antialiasedtext/fast/text/international/bidi-neutral-directionality-paragraph-start-expected.txt
diff --git a/LayoutTests/platform/mac-snowleopard/virtual/mac-antialiasedtext/fast/text/international/bidi-neutral-directionality-paragraph-start-expected.txt b/LayoutTests/platform/mac-snowleopard/virtual/mac-antialiasedtext/fast/text/international/bidi-neutral-directionality-paragraph-start-expected.txt
deleted file mode 100644
index 55e71133b66156ab6b1ef90ddc298e41af1ee67f..0000000000000000000000000000000000000000
--- a/LayoutTests/platform/mac-snowleopard/virtual/mac-antialiasedtext/fast/text/international/bidi-neutral-directionality-paragraph-start-expected.txt
+++ /dev/null
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