Maint: remove ncp-disable deprecated option

- Affects Cyberghost
- Affects PIA
- Affects Torguard
- Affects Windscribe

internal/provider/cyberghost/openvpnconf.go

@@ -34,7 +34,6 @@ func (c *Cyberghost) BuildConf(connection models.Connection,
 
 		// Cyberghost specific
 		// "redirect-gateway def1",
-		"ncp-disable",
 		"script-security 2",
 		"route-delay 5",
 

internal/provider/privateinternetaccess/openvpnconf.go

@@ -48,7 +48,6 @@ func (p *PIA) BuildConf(connection models.Connection,
 		// PIA specific
 		"reneg-sec 0",
 		"disable-occ",
-		"ncp-disable", // prevent from auto-upgrading cipher to aes-256-gcm
 
 		// Added constant values
 		"auth-nocache",

internal/provider/torguard/openvpnconf.go

@@ -39,7 +39,6 @@ func (t *Torguard) BuildConf(connection models.Connection,
 		"reneg-sec 0",
 		"key-direction 1",
 		"script-security 2",
-		"ncp-disable",
 		"keepalive 5 30",
 		"sndbuf 393216",
 		"rcvbuf 393216",

internal/provider/windscribe/openvpnconf.go

@@ -35,7 +35,6 @@ func (w *Windscribe) BuildConf(connection models.Connection,
 		"key-direction 1",
 		"script-security 2",
 		"reneg-sec 0",
-		"ncp-disable",
 
 		// Added constant values
 		"auth-nocache",