reflect: remove obsolete comment about gobitVector

Change-Id: Ie3495a51ac2021a55e7c1ee43a66d07a5bf2757a
GitHub-Last-Rev: b6a6bab3ab840b361021b25cac37eb6891c0fe4b
GitHub-Pull-Request: golang/go#35709
Reviewed-on: https://go-review.googlesource.com/c/go/+/207853Reviewed-by: Ian Lance Taylor <iant@golang.org>

src/reflect/type.go

@@ -3052,7 +3052,6 @@ func ifaceIndir(t *rtype) bool {
 	return t.kind&kindDirectIface == 0
 }
 
-// Layout matches runtime.gobitvector (well enough).
 type bitVector struct {
 	n    uint32 // number of bits
 	data []byte