Remove position info from relocation info.

src/x64/assembler-x64.h

Index: src/x64/assembler-x64.h
diff --git a/src/x64/assembler-x64.h b/src/x64/assembler-x64.h
index a7759c32e16a6300a5501174593c6330d9a3e89a..d0e36dcbde640b7583cda506dcf2514d9e9936e3 100644
--- a/src/x64/assembler-x64.h
+++ b/src/x64/assembler-x64.h
@@ -1752,10 +1752,6 @@ class Assembler : public AssemblerBase {
   void dp(uintptr_t data) { dq(data); }
   void dq(Label* label);
 
-  AssemblerPositionsRecorder* positions_recorder() {
-    return &positions_recorder_;
-  }
-
   // Check if there is less than kGap bytes available in the buffer.
   // If this is the case, we need to grow the buffer before emitting
   // an instruction or relocation information.
@@ -2247,9 +2243,6 @@ class Assembler : public AssemblerBase {
   std::deque<int> internal_reference_positions_;
 
   List< Handle<Code> > code_targets_;
-
-  AssemblerPositionsRecorder positions_recorder_;
-  friend class AssemblerPositionsRecorder;
 };