Revert r12646 "Support for SDIV" because of failing V8 benchmark.

src/arm/assembler-arm.h

Index: src/arm/assembler-arm.h
diff --git a/src/arm/assembler-arm.h b/src/arm/assembler-arm.h
index 005c78d5d8f6aef5760a98c160bbd37984819ce4..c62d480ebaf170dbf39016efee8cef00d8f76217 100644
--- a/src/arm/assembler-arm.h
+++ b/src/arm/assembler-arm.h
@@ -511,7 +511,6 @@ class CpuFeatures : public AllStatic {
     ASSERT(initialized_);
     if (f == VFP3 && !FLAG_enable_vfp3) return false;
     if (f == VFP2 && !FLAG_enable_vfp2) return false;
-    if (f == SUDIV && !FLAG_enable_sudiv) return false;
     return (supported_ & (1u << f)) != 0;
   }
 
@@ -870,12 +869,6 @@ class Assembler : public AssemblerBase {
   void mla(Register dst, Register src1, Register src2, Register srcA,
            SBit s = LeaveCC, Condition cond = al);
 
-  void mls(Register dst, Register src1, Register src2, Register srcA,
-           Condition cond = al);
-
-  void sdiv(Register dst, Register src1, Register src2,
-            Condition cond = al);
-
   void mul(Register dst, Register src1, Register src2,
            SBit s = LeaveCC, Condition cond = al);