Remove .rej files.

src/assembler.cc.rej

Index: src/assembler.cc.rej
===================================================================
--- src/assembler.cc.rej	(revision 5920)
+++ src/assembler.cc.rej	(working copy)
@@ -1,30 +0,0 @@
---- src/assembler.cc	(revision 757)
-+++ src/assembler.cc	(working copy)
-@@ -392,12 +392,16 @@
- RelocIterator::RelocIterator(Code* code, int mode_mask) {
-   rinfo_.pc_ = code->instruction_start();
-   rinfo_.data_ = 0;
--  // relocation info is read backwards
-+  // Relocation info is read backwards.
-   pos_ = code->relocation_start() + code->relocation_size();
-   end_ = code->relocation_start();
-   done_ = false;
-   mode_mask_ = mode_mask;
--  if (mode_mask_ == 0) pos_ = end_;
-+  // Skip all relocation information if the mask is zero or if the
-+  // code has been deoptimized and thereby destructively patched.
-+  if (mode_mask_ == 0 || code->kind() == Code::DEOPTIMIZED_FUNCTION) {
-+    pos_ = end_;
-+  }
-   next();
- }
- 
-@@ -405,7 +409,7 @@
- RelocIterator::RelocIterator(const CodeDesc& desc, int mode_mask) {
-   rinfo_.pc_ = desc.buffer;
-   rinfo_.data_ = 0;
--  // relocation info is read backwards
-+  // Relocation info is read backwards.
-   pos_ = desc.buffer + desc.buffer_size;
-   end_ = pos_ - desc.reloc_size;
-   done_ = false;