[libunwind] Remove unused includes.

git-svn-id: https://llvm.org/svn/llvm-project/libunwind/trunk@246143 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/src/DwarfParser.hpp b/src/DwarfParser.hpp
index f6ef738..26993c4 100644
--- a/src/DwarfParser.hpp
+++ b/src/DwarfParser.hpp
@@ -18,8 +18,6 @@
 #include <stdio.h>
 #include <stdlib.h>
 
-#include <vector>
-
 #include "libunwind.h"
 #include "dwarf2.h"
 
diff --git a/src/Registers.hpp b/src/Registers.hpp
index d01ebf0..0269bf7 100644
--- a/src/Registers.hpp
+++ b/src/Registers.hpp
@@ -14,7 +14,6 @@
 #define __REGISTERS_HPP__
 
 #include <stdint.h>
-#include <strings.h>
 #include <string.h>
 
 #include "libunwind.h"
diff --git a/src/libunwind.cpp b/src/libunwind.cpp
index c408e06..1552101 100644
--- a/src/libunwind.cpp
+++ b/src/libunwind.cpp
@@ -16,9 +16,6 @@
 #include <cstdlib> // getenv
 #endif
 #include <new>
-#include <tuple>
-#include <memory>
-#include <vector>
 #include <algorithm>
 
 #include "libunwind_ext.h"