Deprecate unused RelocInfo::CONSTRUCT_CALL mode.

src/assembler.cc

Index: src/assembler.cc
diff --git a/src/assembler.cc b/src/assembler.cc
index 4f5de79b3e86e5d96e7a7e6dcc4969b5929b9f92..e87105fabcaceed3f54ac81ae2e74e584ea065be 100644
--- a/src/assembler.cc
+++ b/src/assembler.cc
@@ -799,8 +799,6 @@ const char* RelocInfo::RelocModeName(RelocInfo::Mode rmode) {
       return "no reloc 64";
     case EMBEDDED_OBJECT:
       return "embedded object";
-    case CONSTRUCT_CALL:
-      return "code target (js construct call)";
     case DEBUGGER_STATEMENT:
       return "debugger statement";
     case CODE_TARGET:
@@ -901,7 +899,6 @@ void RelocInfo::Verify(Isolate* isolate) {
       Object::VerifyPointer(target_cell());
       break;
     case DEBUGGER_STATEMENT:
-    case CONSTRUCT_CALL:
     case CODE_TARGET_WITH_ID:
     case CODE_TARGET: {
       // convert inline target address to code object