[turbofan] Remove --turbo-asm-deoptimization flag.

src/compiler/pipeline.cc

Index: src/compiler/pipeline.cc
diff --git a/src/compiler/pipeline.cc b/src/compiler/pipeline.cc
index a05775f00032bdc6b8d54d92fa86182d816f6c00..f799e51bd1ae3f3c29ec433b9b4de39bcfd7e265 100644
--- a/src/compiler/pipeline.cc
+++ b/src/compiler/pipeline.cc
@@ -575,7 +575,7 @@ PipelineCompilationJob::Status PipelineCompilationJob::PrepareJobImpl() {
     }
   }
   if (info()->is_optimizing_from_bytecode() ||
-      !info()->shared_info()->asm_function() || FLAG_turbo_asm_deoptimization) {
+      !info()->shared_info()->asm_function()) {
     info()->MarkAsDeoptimizationEnabled();
     if (FLAG_inline_accessors) {
       info()->MarkAsAccessorInliningEnabled();