[turbofan] Remove eager checkpoint.

src/compiler/bytecode-graph-builder.cc

Index: src/compiler/bytecode-graph-builder.cc
diff --git a/src/compiler/bytecode-graph-builder.cc b/src/compiler/bytecode-graph-builder.cc
index 5f1d47393e64353fe78ea682a6fc0d9048e665a5..f84d4088d732b434b40e6bf7c8a055a704e262ba 100644
--- a/src/compiler/bytecode-graph-builder.cc
+++ b/src/compiler/bytecode-graph-builder.cc
@@ -1686,7 +1686,6 @@ void BytecodeGraphBuilder::VisitTestUndefined() {
 }
 
 void BytecodeGraphBuilder::BuildCastOperator(const Operator* js_op) {
-  PrepareEagerCheckpoint();
   Node* value = NewNode(js_op, environment()->LookupAccumulator());
   environment()->BindRegister(bytecode_iterator().GetRegisterOperand(0), value,
                               Environment::kAttachFrameState);