[ser][nfc] Remove unused mdnodes from test

Author: simoll

tools/clang/test/DXILValidation/ser_hitobject_make_passing.ll

@@ -27,22 +27,20 @@ declare %dx.types.HitObject @dx.op.hitObject_MakeNop(i32) #1
 attributes #0 = { nounwind }
 attributes #1 = { nounwind readnone }
 
-!llvm.ident = !{!0}
-!dx.version = !{!1}
-!dx.valver = !{!1}
-!dx.shaderModel = !{!2}
-!dx.typeAnnotations = !{!3}
-!dx.entryPoints = !{!10, !12}
-
-!0 = !{!"dxc(private) 1.8.0.4840 (ser, 9ffd030b1)"}
-!1 = !{i32 1, i32 9}
-!2 = !{!"lib", i32 6, i32 9}
-!3 = !{i32 1, void ()* @"\01?main@@YAXXZ", !4}
-!4 = !{!5}
-!5 = !{i32 1, !6, !6}
-!6 = !{}
-!10 = !{null, !"", null, null, !11}
-!11 = !{i32 0, i64 0}
-!12 = !{void ()* @"\01?main@@YAXXZ", !"\01?main@@YAXXZ", null, null, !13}
-!13 = !{i32 8, i32 7, i32 5, !14}
-!14 = !{i32 0}
+!dx.version = !{!0}
+!dx.valver = !{!0}
+!dx.shaderModel = !{!1}
+!dx.typeAnnotations = !{!2}
+!dx.entryPoints = !{!9, !11}
+
+!0 = !{i32 1, i32 9}
+!1 = !{!"lib", i32 6, i32 9}
+!2 = !{i32 1, void ()* @"\01?main@@YAXXZ", !3}
+!3 = !{!4}
+!4 = !{i32 1, !5, !5}
+!5 = !{}
+!9 = !{null, !"", null, null, !10}
+!10 = !{i32 0, i64 0}
+!11 = !{void ()* @"\01?main@@YAXXZ", !"\01?main@@YAXXZ", null, null, !12}
+!12 = !{i32 8, i32 7, i32 5, !13}
+!13 = !{i32 0}