Remove usage of feature flag for passkey unlock (#7318)

Now that passkey unlock has been released, this change removes the logic related to the passkey unlock feature flag pm-2035-passkey-unlock. The feature flag itself will be removed in a future ticket.

Author: eligrubb

src/Api/Vault/Controllers/SyncController.cs

@@ -126,9 +126,7 @@ await _providerUserRepository.GetManyOrganizationDetailsByUserAsync(user.Id,
         var organizationIdsClaimingActiveUser = organizationClaimingActiveUser.Select(o => o.Id);
 
         var organizationAbilities = await GetOrganizationAbilitiesAsync(ciphers);
-        var webAuthnCredentials = _featureService.IsEnabled(FeatureFlagKeys.PM2035PasskeyUnlock)
-            ? await _webAuthnCredentialRepository.GetManyByUserIdAsync(user.Id)
-            : [];
+        var webAuthnCredentials = await _webAuthnCredentialRepository.GetManyByUserIdAsync(user.Id);
 
         UserAccountKeysData userAccountKeys = null;
         // JIT TDE users and some broken/old users may not have a private key.