ARM: Try to avoid VMSR instruction and drop redundant VCVT

src/arm/macro-assembler-arm.h

Index: src/arm/macro-assembler-arm.h
diff --git a/src/arm/macro-assembler-arm.h b/src/arm/macro-assembler-arm.h
index 70659ae39a070151db646f569e28e9a50f456e4f..765abbaffe035422d6689764fdfa147620d42165 100644
--- a/src/arm/macro-assembler-arm.h
+++ b/src/arm/macro-assembler-arm.h
@@ -460,11 +460,6 @@ class MacroAssembler: public Assembler {
             const MemOperand& dst,
             Condition cond = al);
 
-  // Clear specified FPSCR bits.
-  void ClearFPSCRBits(const uint32_t bits_to_clear,
-                      const Register scratch,
-                      const Condition cond = al);
-
   // Compare double values and move the result to the normal condition flags.
   void VFPCompareAndSetFlags(const DwVfpRegister src1,
                              const DwVfpRegister src2,