Remove ARM support for soft float (pre-VFP2)

src/arm/code-stubs-arm.h

Index: src/arm/code-stubs-arm.h
diff --git a/src/arm/code-stubs-arm.h b/src/arm/code-stubs-arm.h
index fe1fff6131a40eccb860b45a53ab0967c9cf08e3..741ff9ca8312740b715c29c262de9ed147cce62e 100644
--- a/src/arm/code-stubs-arm.h
+++ b/src/arm/code-stubs-arm.h
@@ -61,9 +61,7 @@ class TranscendentalCacheStub: public PlatformCodeStub {
 class StoreBufferOverflowStub: public PlatformCodeStub {
  public:
   explicit StoreBufferOverflowStub(SaveFPRegsMode save_fp)
-      : save_doubles_(save_fp) {
-    ASSERT(CpuFeatures::IsSafeForSnapshot(VFP2) || save_fp == kDontSaveFPRegs);
-  }
+      : save_doubles_(save_fp) {}
 
   void Generate(MacroAssembler* masm);
 
@@ -473,7 +471,6 @@ class RecordWriteStub: public PlatformCodeStub {
       if (mode == kSaveFPRegs) {
         // Number of d-regs not known at snapshot time.
         ASSERT(!Serializer::enabled());
-        CpuFeatureScope scope(masm, VFP2);
         masm->sub(sp,
                   sp,
                   Operand(kDoubleSize * (DwVfpRegister::NumRegisters() - 1)));
@@ -491,7 +488,6 @@ class RecordWriteStub: public PlatformCodeStub {
       if (mode == kSaveFPRegs) {
         // Number of d-regs not known at snapshot time.
         ASSERT(!Serializer::enabled());
-        CpuFeatureScope scope(masm, VFP2);
         // Restore all VFP registers except d0.
         // TODO(hans): We should probably restore d0 too. And maybe use vldm.
         for (int i = DwVfpRegister::NumRegisters() - 1; i > 0; i--) {