[turbofan] Remove the unused asm.js types from TypeCache.

src/compiler/js-typed-lowering.h

Index: src/compiler/js-typed-lowering.h
diff --git a/src/compiler/js-typed-lowering.h b/src/compiler/js-typed-lowering.h
index c93c15d34a00cc2c6931249d8b877b39dd3efc52..c81ddfa83e2a8dcb0d187430206ad5331442d8f4 100644
--- a/src/compiler/js-typed-lowering.h
+++ b/src/compiler/js-typed-lowering.h
@@ -15,8 +15,6 @@ namespace internal {
 // Forward declarations.
 class CompilationDependencies;
 class Factory;
-class TypeCache;
-
 
 namespace compiler {
 
@@ -26,7 +24,7 @@ class JSGraph;
 class JSOperatorBuilder;
 class MachineOperatorBuilder;
 class SimplifiedOperatorBuilder;
-
+class TypeCache;
 
 // Lowers JS-level operators to simplified operators based on types.
 class JSTypedLowering final : public AdvancedReducer {