Remove some starting stations.

data/direct_to_paddington.tsv

@@ -1,34 +1,9 @@
-Shenfield	SNF
-Brentwood	BRE
-Harold Wood	HRO
-Gidea Park	GDP
-Romford	RMF
-Chadwell Heath	CTH
-Goodmayes	GMY
-Seven Kings	SVK
-Ilford	IFD
-Manor Park	MNP
-Forest Gate	FOG
-Maryland	MYL
-Stratford (London)	SRA
-Whitechapel	ZLW
-London Liverpool Street	LST
-Farringdon	ZFD
-Tottenham Court Road	TCR
-Bond Street	BDS
-London Paddington	PAD
-Heathrow Airport Terminal 5	HWV
-Heathrow Central	HXX
 Hayes & Harlington	HAY
 Southall	STL
 Hanwell	HAN
 West Ealing	WEA
 Ealing Broadway	EAL
 Acton Main Line	AML
-Abbey Wood	ABW
-Woolwich	WWC
-Custom House	CUS
-Canary Wharf	CWX
 Reading	RDG
 Twyford	TWY
 Maidenhead	MAI
@@ -40,7 +15,6 @@ Iver	IVR
 West Drayton	WDT
 Oxford	OXF
 Didcot Parkway	DID
-Heathrow Airport Terminal 4	HAF
 Cholsey	CHO
 Goring & Streatley	GOR
 Pangbourne	PAN