Remove position info from relocation info.

src/x87/assembler-x87.h

Index: src/x87/assembler-x87.h
diff --git a/src/x87/assembler-x87.h b/src/x87/assembler-x87.h
index d4cde52ff6871c6bab09570a298f685b3887ee19..5974dce64b2bdca9f4539c71b41f3ae1a6111c67 100644
--- a/src/x87/assembler-x87.h
+++ b/src/x87/assembler-x87.h
@@ -990,10 +990,6 @@ class Assembler : public AssemblerBase {
 
   static bool IsNop(Address addr);
 
-  AssemblerPositionsRecorder* positions_recorder() {
-    return &positions_recorder_;
-  }
-
   int relocation_writer_size() {
     return (buffer_ + buffer_size_) - reloc_info_writer.pos();
   }
@@ -1079,9 +1075,6 @@ class Assembler : public AssemblerBase {
 
   // code generation
   RelocInfoWriter reloc_info_writer;
-
-  AssemblerPositionsRecorder positions_recorder_;
-  friend class AssemblerPositionsRecorder;
 };