remove defunct SNCB profile 💥📝✅

related: #284
related: iRail/iRail#466
related: schildbach/public-transport-enabler#502

Author: derhuerst

p/readme.md

@@ -10,7 +10,6 @@ HAFAS endpoint | wrapper library | docs | example code | profile name
 -|-|-|-|-
 [Deutsche Bahn (DB)](https://en.wikipedia.org/wiki/Deutsche_Bahn) | [`db-hafas`](https://github.com/public-transport/db-hafas) | [docs](db/readme.md) | [example](db/example.js) | [`db`](db)
 [Polskie Koleje Państwowe (PKP)](https://en.wikipedia.org/wiki/Polish_State_Railways) | [`pkp-hafas`](https://github.com/juliuste/pkp-hafas) | [docs](pkp/readme.md) | [example](pkp/example.js) | [`pkp`](pkp)
-[Belgian National Railways (SNCB/NMBS)](https://en.wikipedia.org/wiki/National_Railway_Company_of_Belgium) | - | [docs](sncb/readme.md) | [example](sncb/example.js) | [`sncb`](sncb) (currently broken)
 [*Iarnród Éireann* (Irish Rail)](https://en.wikipedia.org/wiki/Iarnród_Éireann) | - | [docs](irish-rail/readme.md) | [example](irish-rail/example.js) | [`irish-rail`](irish-rail)
 [Berlin & Brandenburg public transport (VBB)](https://en.wikipedia.org/wiki/Verkehrsverbund_Berlin-Brandenburg) | [`vbb-hafas`](https://github.com/public-transport/vbb-hafas) | [docs](vbb/readme.md) | [example](vbb/example.js) | [`vbb`](vbb)
 [Berlin public transport (BVG)](https://en.wikipedia.org/wiki/Berliner_Verkehrsbetriebe) | [`bvg-hafas`](https://github.com/public-transport/bvg-hafas) | [docs](bvg/readme.md) | [example](bvg/example.js) | [`bvg`](bvg)

p/sncb/base.json

@@ -26,28 +26,6 @@ const linkTypesByCode = Object.assign(Object.create(null), {
 // todo: https://github.com/KDE/kpublictransport/blob/39ac8f9586b9300fa8a9ba0dec010e96fab9ab08/src/lib/backends/hafasmgateparser.cpp#L56-L72
 // todo: h.sty
 
-// SNCB:
-// {
-// 	"type": "A",
-// 	"code": "60",
-// 	"prio": 10,
-// 	"icoX": 2,
-// 	"txtN": "Reservierungspflicht"
-// }
-// {
-// 	"type": "A",
-// 	"code": "64",
-// 	"prio": 110,
-// 	"icoX": 2,
-// 	"txtN": "Zuschlag"
-// }
-// {
-// 	"type": "I",
-// 	"code": "CON_OVERVIEW_TARIF_HINT",
-// 	"icoX": 2,
-// 	"txtN": "Für diese Strecke ist ein internationales Ticket notwendig."
-// }
-
 // DB:
 // {
 // 	"type": "C",