[crankshaft] Move is_tracking_positions predicate.

src/compilation-info.h

Index: src/compilation-info.h
diff --git a/src/compilation-info.h b/src/compilation-info.h
index 7f13aeb2601371fcde28150104ae80ef581d5f94..88477ae75ea44db5a09c7a56fe8963fac84bcd4d 100644
--- a/src/compilation-info.h
+++ b/src/compilation-info.h
@@ -92,8 +92,6 @@ class CompilationInfo final {
   bool has_bytecode_array() const { return !bytecode_array_.is_null(); }
   Handle<BytecodeArray> bytecode_array() const { return bytecode_array_; }
 
-  bool is_tracking_positions() const { return track_positions_; }
-
   bool is_calling() const {
     return GetFlag(kDeferredCalling) || GetFlag(kNonDeferredCalling);
   }
@@ -379,8 +377,6 @@ class CompilationInfo final {
 
   int prologue_offset_;
 
-  bool track_positions_;
-
   InlinedFunctionList inlined_functions_;
 
   // Number of parameters used for compilation of stubs that require arguments.