[crankshaft] Remove the useless HAllocateBlockContext instruction.

src/crankshaft/hydrogen-instructions.cc

Index: src/crankshaft/hydrogen-instructions.cc
diff --git a/src/crankshaft/hydrogen-instructions.cc b/src/crankshaft/hydrogen-instructions.cc
index 23aa9b0a12c95e34556b3827f08c896cc4ebd023..a9c6228cd35c096636a22d9e2358434dfd48e5cc 100644
--- a/src/crankshaft/hydrogen-instructions.cc
+++ b/src/crankshaft/hydrogen-instructions.cc
@@ -828,7 +828,6 @@ bool HInstruction::CanDeoptimize() {
       return false;
 
     case HValue::kAdd:
-    case HValue::kAllocateBlockContext:
     case HValue::kApplyArguments:
     case HValue::kBitwise:
     case HValue::kBoundsCheck:
@@ -1103,12 +1102,6 @@ std::ostream& HAccessArgumentsAt::PrintDataTo(
 }
 
 
-std::ostream& HAllocateBlockContext::PrintDataTo(
-    std::ostream& os) const {  // NOLINT
-  return os << NameOf(context()) << " " << NameOf(function());
-}
-
-
 std::ostream& HControlInstruction::PrintDataTo(
     std::ostream& os) const {  // NOLINT
   os << " goto (";