Shrink runtime.TypeMeta to be equivalent to api TypeMeta

Remove unused fuzzing

pkg/api/validation/schema_test.go

@@ -49,15 +49,6 @@ var apiObjectFuzzer = fuzz.New().NilChance(.5).NumElements(1, 1).Funcs(
 		// APIVersion and Kind must remain blank in memory.
 		j.APIVersion = ""
 		j.Kind = ""
-
-		j.Name = c.RandString()
-		j.ResourceVersion = strconv.FormatUint(c.RandUint64(), 10)
-		j.SelfLink = c.RandString()
-
-		var sec, nsec int64
-		c.Fuzz(&sec)
-		c.Fuzz(&nsec)
-		j.CreationTimestamp = util.Unix(sec, nsec).Rfc3339Copy()
 	},
 	func(j *api.TypeMeta, c fuzz.Continue) {
 		// We have to customize the randomization of TypeMetas because their