Change: remove decomissioned SecureDNS option

internal/constants/dns.go

@@ -17,8 +17,6 @@ const (
 	Quadrant models.DNSProvider = "quadrant"
 	// CleanBrowsing is a DNS over TLS provider.
 	CleanBrowsing models.DNSProvider = "cleanbrowsing"
-	// SecureDNS is a DNS over TLS provider.
-	SecureDNS models.DNSProvider = "securedns"
 )
 
 // DNSProviderMapping returns a constant mapping of dns provider name
@@ -78,15 +76,6 @@ func DNSProviderMapping() map[models.DNSProvider]models.DNSProviderData {
 			SupportsIPv6: true,
 			Host:         models.DNSHost("security-filter-dns.cleanbrowsing.org"),
 		},
-		SecureDNS: {
-			IPs: []net.IP{
-				{146, 185, 167, 43},
-				{0x2a, 0x3, 0xb0, 0xc0, 0x0, 0x0, 0x10, 0x10, 0x0, 0x0, 0x0, 0x0, 0xe, 0x9a, 0x30, 0x1},
-			},
-			SupportsTLS:  true,
-			SupportsIPv6: true,
-			Host:         models.DNSHost("dot.securedns.eu"),
-		},
 	}
 }
 

internal/params/dns.go

@@ -28,7 +28,7 @@ func (r *reader) GetDNSOverTLSProviders() (providers []models.DNSProvider, err e
 		provider := models.DNSProvider(word)
 		switch provider {
 		case constants.Cloudflare, constants.Google, constants.Quad9,
-			constants.Quadrant, constants.CleanBrowsing, constants.SecureDNS:
+			constants.Quadrant, constants.CleanBrowsing:
 			providers = append(providers, provider)
 		default:
 			return nil, fmt.Errorf("DNS over TLS provider %q is not valid", provider)