fix(v2ray): remove unused VPN DNS server retrieval

V2rayNG/app/src/main/java/xyz/zarazaex/olc/handler/SettingsManager.kt

@@ -346,7 +346,7 @@ object SettingsManager {
      */
     fun getVpnDnsServers(): List<String> {
         val vpnDns = MmkvManager.decodeSettingsString(AppConfig.PREF_VPN_DNS) ?: AppConfig.DNS_VPN
-        return vpnDns.split(",").filter { it.isNotBlank() }
+        return vpnDns.split(",").filter { it.isNotBlank() && Utils.isPureIpAddress(it) }
     }
 
     /**

V2rayNG/app/src/main/java/xyz/zarazaex/olc/handler/V2rayConfigManager.kt

@@ -594,7 +594,6 @@ object V2rayConfigManager {
 
             val remoteDns = SettingsManager.getRemoteDnsServers()
             val domesticDns = SettingsManager.getDomesticDnsServers()
-            val vpnDns = if (SettingsManager.isVpnMode()) SettingsManager.getVpnDnsServers() else emptyList()
             val proxyDomain = getUserRule2Domain(AppConfig.TAG_PROXY)
             val directDomain = getUserRule2Domain(AppConfig.TAG_DIRECT)
             val isCnRoutingMode = directDomain.contains(AppConfig.GEOSITE_CN)
@@ -621,14 +620,8 @@ object V2rayConfigManager {
                 )
             }
 
-            if (vpnDns.isNotEmpty()) {
-                vpnDns.forEach {
-                    servers.add(it)
-                }
-            } else {
-                remoteDns.forEach {
-                    servers.add(it)
-                }
+            remoteDns.forEach {
+                servers.add(it)
             }
 
             val blkDomain = getUserRule2Domain(AppConfig.TAG_BLOCKED)