quic: remove unused operator overload

PR-URL: #366
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Daniel Bevenius <daniel.bevenius@gmail.com>

Author: jasnell

src/quic/node_quic_util-inl.h

@@ -42,12 +42,6 @@ size_t QuicCID::Hash::operator()(const QuicCID& token) const {
   return hash;
 }
 
-QuicCID& QuicCID::operator=(const QuicCID& cid) {
-  if (this == &cid) return *this;
-  this->~QuicCID();
-  return *new(this) QuicCID(std::move(cid));
-}
-
 bool QuicCID::operator==(const QuicCID& other) const {
   return memcmp(cid()->data, other.cid()->data, cid()->datalen) == 0;
 }

src/quic/node_quic_util.h

@@ -297,7 +297,6 @@ class QuicCID : public MemoryRetainer {
 
   inline bool operator==(const QuicCID& other) const;
   inline bool operator!=(const QuicCID& other) const;
-  inline QuicCID& operator=(const QuicCID& cid);
   const ngtcp2_cid& operator*() const { return *ptr_; }
   const ngtcp2_cid* operator->() const { return ptr_; }