location-importer: AS names starting with "DNIC" actually are valid

These are all assigned to the US Department of Defense.
Signed-off-by: Peter Müller <peter.mueller@ipfire.org>
Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>

src/scripts/location-importer.in

@@ -894,7 +894,7 @@ class CLI(object):
 					continue
 
 				# Skip any AS name that appears to be a placeholder for a different RIR or entity...
-				if re.match(r"^(ASN-BLK|)(AFCONC|AFRINIC|APNIC|ASNBLK|DNIC|LACNIC|RIPE|IANA)(?:\d?$|\-)", name):
+				if re.match(r"^(ASN-BLK|)(AFCONC|AFRINIC|APNIC|ASNBLK|LACNIC|RIPE|IANA)(?:\d?$|\-)", name):
 					continue
 
 				# Bail out in case the AS name contains anything we do not expect here...