Updated to most recent version RE2 and remove upstreamed patches.

third_party/re2/patches/remove-testinstall.cc-and-fix-filepermissions.patch

Index: third_party/re2/patches/remove-testinstall.cc-and-fix-filepermissions.patch
diff --git a/third_party/re2/patches/remove-testinstall.cc-and-fix-filepermissions.patch b/third_party/re2/patches/remove-testinstall.cc-and-fix-filepermissions.patch
deleted file mode 100644
index 6b9276982510ee39e6c9a02bfaeadb9df7b04218..0000000000000000000000000000000000000000
--- a/third_party/re2/patches/remove-testinstall.cc-and-fix-filepermissions.patch
+++ /dev/null
@@ -1,29 +0,0 @@
-diff --git a/third_party/re2/re2/unicode.py b/third_party/re2/re2/unicode.py
-old mode 100755
-new mode 100644
-diff --git a/third_party/re2/testinstall.cc b/third_party/re2/testinstall.cc
-deleted file mode 100644
-index 40b7a8a..0000000
---- a/third_party/re2/testinstall.cc
-+++ /dev/null
-@@ -1,20 +0,0 @@
--#include <re2/re2.h>
--#include <re2/filtered_re2.h>
--#include <stdio.h>
--
--using namespace re2;
--
--int main(void) {
--	FilteredRE2 f;
--	int id;
--	f.Add("a.*b.*c", RE2::DefaultOptions, &id);
--	vector<string> v;
--	f.Compile(&v);
--
--	if(RE2::FullMatch("axbyc", "a.*b.*c")) {
--		printf("PASS\n");
--		return 0;
--	}
--	printf("FAIL\n");
--	return 2;
--}