Update re2

third_party/re2/patches/re2-libcxx.patch

Index: third_party/re2/patches/re2-libcxx.patch
diff --git a/third_party/re2/patches/re2-libcxx.patch b/third_party/re2/patches/re2-libcxx.patch
deleted file mode 100644
index 54f3b6bd62df02b53c5d22939f31c0f799e6dd46..0000000000000000000000000000000000000000
--- a/third_party/re2/patches/re2-libcxx.patch
+++ /dev/null
@@ -1,23 +0,0 @@
-diff --git a/third_party/re2/util/util.h b/third_party/re2/util/util.h
-index 8f54040..de1ef5b 100644
---- a/third_party/re2/util/util.h
-+++ b/third_party/re2/util/util.h
-@@ -46,7 +46,8 @@ using std::sort;
- using std::swap;
- using std::make_pair;
- 
--#if defined(__GNUC__) && !defined(USE_CXX0X) && !defined(OS_ANDROID)
-+#if defined(__GNUC__) && !defined(USE_CXX0X) && !defined(OS_ANDROID) && \
-+    !defined(_LIBCPP_ABI_VERSION)
- 
- #include <tr1/unordered_set>
- using std::tr1::unordered_set;
-@@ -54,1 +55,1 @@ using std::tr1::unordered_set;
- #else
-
- #include <unordered_set>
--#if defined(WIN32) || defined(OS_ANDROID)
-+#if defined(WIN32) || (defined(OS_ANDROID) && !defined(_LIBCPP_ABI_VERSION))
- using std::tr1::unordered_set;
- #else
- using std::unordered_set;