Remove position info from relocation info.

src/arm64/assembler-arm64.h

Index: src/arm64/assembler-arm64.h
diff --git a/src/arm64/assembler-arm64.h b/src/arm64/assembler-arm64.h
index cc26278c979e8d50d0cf0f5dab71958347ca1b86..ba2e5f12688ce46c829bd97452dd38642eb91ee9 100644
--- a/src/arm64/assembler-arm64.h
+++ b/src/arm64/assembler-arm64.h
@@ -925,9 +925,6 @@ class Assembler : public AssemblerBase {
   }
 
   // Debugging ----------------------------------------------------------------
-  AssemblerPositionsRecorder* positions_recorder() {
-    return &positions_recorder_;
-  }
   void RecordComment(const char* msg);
 
   // Record a deoptimization reason that can be used by a log or cpu profiler.
@@ -2181,8 +2178,6 @@ class Assembler : public AssemblerBase {
   void DeleteUnresolvedBranchInfoForLabelTraverse(Label* label);
 
  private:
-  AssemblerPositionsRecorder positions_recorder_;
-  friend class AssemblerPositionsRecorder;
   friend class EnsureSpace;
   friend class ConstPool;
 };