Update re2

third_party/re2/patches/remove-valgrind-code.patch

Index: third_party/re2/patches/remove-valgrind-code.patch
diff --git a/third_party/re2/patches/remove-valgrind-code.patch b/third_party/re2/patches/remove-valgrind-code.patch
deleted file mode 100644
index ba6007a279754ad43d0398fde054a0619f50346a..0000000000000000000000000000000000000000
--- a/third_party/re2/patches/remove-valgrind-code.patch
+++ /dev/null
@@ -1,35 +0,0 @@
-diff --git a/re2/dfa.cc b/re2/dfa.cc
-index 2556c0f..f1fc7b0 100644
---- a/re2/dfa.cc
-+++ b/re2/dfa.cc
-@@ -27,6 +27,8 @@
- #include "util/flags.h"
- #include "util/sparse_set.h"
- 
-+#define NO_THREAD_SAFETY_ANALYSIS
-+
- DEFINE_bool(re2_dfa_bail_when_slow, true,
-             "Whether the RE2 DFA should bail out early "
-             "if the NFA would be faster (for testing).");
-diff --git a/util/util.h b/util/util.h
-index 471c64f..c46ab1b 100644
---- a/util/util.h
-+++ b/util/util.h
-@@ -27,6 +27,8 @@
- #include <utility>
- #include <set>
- 
-+#include "base/third_party/dynamic_annotations/dynamic_annotations.h"
-+
- // Use std names.
- using std::set;
- using std::pair;
-@@ -119,8 +121,6 @@ static inline uint64 Hash64StringWithSeed(const char* s, int len, uint32 seed) {
-   return ((uint64)x << 32) | y;
- }
- 
--int RunningOnValgrind();
--
- }  // namespace re2
- 
- #include "util/arena.h"