ARM: Remove unused flag in lithium-codegen.

src/arm/lithium-codegen-arm.h

Index: src/arm/lithium-codegen-arm.h
diff --git a/src/arm/lithium-codegen-arm.h b/src/arm/lithium-codegen-arm.h
index 2c3f01fb59c99b17dbe4d543d9f967cb06ab1016..672b9960dcce2b8a7f622498dc26c44fc97b6bb0 100644
--- a/src/arm/lithium-codegen-arm.h
+++ b/src/arm/lithium-codegen-arm.h
@@ -59,7 +59,6 @@ class LCodeGen BASE_EMBEDDED {
         status_(UNUSED),
         translations_(info->zone()),
         deferred_(8, info->zone()),
-        support_aligned_spilled_doubles_(false),
         osr_pc_offset_(-1),
         last_lazy_deopt_pc_(0),
         frame_is_built_(false),
@@ -414,7 +413,6 @@ class LCodeGen BASE_EMBEDDED {
   Status status_;
   TranslationBuffer translations_;
   ZoneList<LDeferredCode*> deferred_;
-  bool support_aligned_spilled_doubles_;
   int osr_pc_offset_;
   int last_lazy_deopt_pc_;
   bool frame_is_built_;