Remove strong mode support from binary operations.

src/crankshaft/arm/lithium-arm.h

Index: src/crankshaft/arm/lithium-arm.h
diff --git a/src/crankshaft/arm/lithium-arm.h b/src/crankshaft/arm/lithium-arm.h
index 9806588ef5c65ba28c003dd878dfafe7b41d82f0..b84159755d4b3b3fac1eb74b50c860faf113ae5c 100644
--- a/src/crankshaft/arm/lithium-arm.h
+++ b/src/crankshaft/arm/lithium-arm.h
@@ -1140,8 +1140,6 @@ class LCmpT final : public LTemplateInstruction<1, 3, 0> {
   DECLARE_CONCRETE_INSTRUCTION(CmpT, "cmp-t")
   DECLARE_HYDROGEN_ACCESSOR(CompareGeneric)
 
-  Strength strength() { return hydrogen()->strength(); }
-
   Token::Value op() const { return hydrogen()->token(); }
 };
 
@@ -1468,8 +1466,6 @@ class LArithmeticT final : public LTemplateInstruction<1, 3, 0> {
 
   DECLARE_HYDROGEN_ACCESSOR(BinaryOperation)
 
-  Strength strength() { return hydrogen()->strength(); }
-
  private:
   Token::Value op_;
 };