Bug 1417433 - Remove unused U2FSoftTokenManager::IsCompatibleVersion() r=jcj

Summary:
This check was replaced a while ago, by [1]

[1] https://searchfox.org/mozilla-central/search?q=kRequiredU2FVersion

Reviewers: jcj

Reviewed By: jcj

Bug #: 1417433

Differential Revision: https://phabricator.services.mozilla.com/D246

dom/webauthn/U2FSoftTokenManager.cpp

@@ -25,8 +25,6 @@ using mozilla::dom::CreateECParamsForCurve;
 
 const nsCString U2FSoftTokenManager::mSecretNickname =
   NS_LITERAL_CSTRING("U2F_NSSTOKEN");
-const nsString U2FSoftTokenManager::mVersion =
-  NS_LITERAL_STRING("U2F_V2");
 
 namespace {
 NS_NAMED_LITERAL_CSTRING(kAttestCertSubjectName, "CN=Firefox U2F Soft Token");
@@ -575,13 +573,6 @@ PrivateKeyFromKeyHandle(const UniquePK11SlotInfo& aSlot,
   return unwrappedKey;
 }
 
-// Return whether the provided version is supported by this token.
-bool
-U2FSoftTokenManager::IsCompatibleVersion(const nsAString& aVersion)
-{
-  return mVersion == aVersion;
-}
-
 // IsRegistered determines if the provided key handle is usable by this token.
 nsresult
 U2FSoftTokenManager::IsRegistered(const nsTArray<uint8_t>& aKeyHandle,

dom/webauthn/U2FSoftTokenManager.h

@@ -46,7 +46,6 @@ public:
 private:
   ~U2FSoftTokenManager();
   nsresult Init();
-  bool IsCompatibleVersion(const nsAString& aVersion);
 
   nsresult IsRegistered(const nsTArray<uint8_t>& aKeyHandle,
                         const nsTArray<uint8_t>& aAppParam,
@@ -56,7 +55,6 @@ private:
   mozilla::UniquePK11SymKey mWrappingKey;
 
   static const nsCString mSecretNickname;
-  static const nsString mVersion;
 
   nsresult GetOrCreateWrappingKey(const mozilla::UniquePK11SlotInfo& aSlot,
                                   const nsNSSShutDownPreventionLock&);