Drop currency rows with no minor unit, which are no national currency

data-import/currency.py

@@ -46,7 +46,7 @@ def rows(text, symbol):
     seen = set()
     for r in csv.DictReader(io.StringIO(text)):
         code = r["AlphabeticCode"]
-        if not code or code in seen or r["WithdrawalDate"] or r["Entity"].startswith("ZZ"):
+        if not code or code in seen or r["WithdrawalDate"] or r["Entity"].startswith("ZZ") or not r["MinorUnit"].isdigit():
             continue
         seen.add(code)
         yield {

data/misc/currency.tsv

@@ -158,11 +158,8 @@ XAD	2	Arab Accounting Dinar	396	XAD
 XAF	0	CFA Franc BEAC	950	FCFA
 XCD	2	East Caribbean Dollar	951	$
 XCG	2	Caribbean Guilder	532	Cg.
-XDR	-	SDR (Special Drawing Right)	960	XDR
 XOF	0	CFA Franc BCEAO	952	F CFA
 XPF	0	CFP Franc	953	CFPF
-XSU	-	Sucre	994	XSU
-XUA	-	ADB Unit of Account	965	XUA
 YER	2	Yemeni Rial	886	YER
 ZAR	2	Rand	710	R
 ZMW	2	Zambian Kwacha	967	ZK