Remove old TODO(nharper) that is out of date

PiperOrigin-RevId: 342363413
Change-Id: I56d9568a3042c20bf224361f4466f4c0323218eb

quic/core/crypto/crypto_utils.cc

diff --git a/quic/core/crypto/crypto_utils.cc b/quic/core/crypto/crypto_utils.cc
index efb7b66..452b85e 100644
--- a/quic/core/crypto/crypto_utils.cc
+++ b/quic/core/crypto/crypto_utils.cc
@@ -55,11 +55,6 @@
 // The implicit PRF is explicitly passed into HkdfExpandLabel as |prf|; the
 // Secret, Label, and Length are passed in as |secret|, |label|, and
 // |out_len|, respectively. The resulting expanded secret is returned.
-//
-// TODO(nharper): HkdfExpandLabel and SetKeyAndIV (below) implement what is
-// specified in draft-ietf-quic-tls-16. The latest editors' draft has changed
-// derivation again, and this will need to be updated to reflect those (and any
-// other future) changes.
 std::vector<uint8_t> HkdfExpandLabel(const EVP_MD* prf,
                                      const std::vector<uint8_t>& secret,
                                      const std::string& label,