Remove a brittle assertion from Turbofan lazy deoptimization handling.

src/compiler/ia32/code-generator-ia32.cc

Index: src/compiler/ia32/code-generator-ia32.cc
diff --git a/src/compiler/ia32/code-generator-ia32.cc b/src/compiler/ia32/code-generator-ia32.cc
index 31a01798a942cc05810d272b7d69d992b8b47b52..9fef740810180eaf6dfa10d39c7cf9110525b56a 100644
--- a/src/compiler/ia32/code-generator-ia32.cc
+++ b/src/compiler/ia32/code-generator-ia32.cc
@@ -938,19 +938,6 @@ void CodeGenerator::AddNopForSmiCodeInlining() { __ nop(); }
 
 #undef __
 
-#ifdef DEBUG
-
-// Checks whether the code between start_pc and end_pc is a no-op.
-bool CodeGenerator::IsNopForSmiCodeInlining(Handle<Code> code, int start_pc,
-                                            int end_pc) {
-  if (start_pc + 1 != end_pc) {
-    return false;
-  }
-  return *(code->instruction_start() + start_pc) ==
-         v8::internal::Assembler::kNopByte;
-}
-
-#endif  // DEBUG
 }
 }
 }  // namespace v8::internal::compiler