[cleanup] Port KeyedLoadIC_{Slow,Miss} to TF and drop unused IC handler code

src/ic/ic.h

Index: src/ic/ic.h
diff --git a/src/ic/ic.h b/src/ic/ic.h
index 397c93a5efb13be79a4ed32a9b0a7a527b8ea8c5..10081272d671c0a2e4d3beb88091b3c4befefab7 100644
--- a/src/ic/ic.h
+++ b/src/ic/ic.h
@@ -286,8 +286,6 @@ class LoadIC : public IC {
   }
 
   // Code generator routines.
-
-  static void GenerateMiss(MacroAssembler* masm);
   static void GenerateRuntimeGetProperty(MacroAssembler* masm);
   static void GenerateNormal(MacroAssembler* masm);
 
@@ -354,10 +352,6 @@ class KeyedLoadIC : public LoadIC {
   MUST_USE_RESULT MaybeHandle<Object> Load(Handle<Object> object,
                                            Handle<Object> key);
 
-  // Code generator routines.
-  static void GenerateMiss(MacroAssembler* masm);
-  static void GenerateRuntimeGetProperty(MacroAssembler* masm);
-
   static void Clear(Isolate* isolate, Code* host, KeyedLoadICNexus* nexus);
 
  protected: