MNT: Fix malformed record in station test data

CSV data had a comma in the remarks column. Remove that so that it
parses better.

Author: dopplershift

testdata/station_data.txt

@@ -742,7 +742,7 @@ time,station,latitude[unit="degrees_north"],longitude[unit="degrees_east"],air_p
 2016-01-15 23:53:00Z,LXV,39.220,-106.319,NaN,-9.0,1.0,-13.0,NaN,NaN,0.75,1800.0,1.0,2100.0,NaN,NaN,10.0,,320,3.086664,
 2016-01-15 23:54:00Z,LYH,37.330,-79.199,NaN,4.0,1.0,4.0,NaN,NaN,1.0,120.0,NaN,NaN,NaN,NaN,5.0,-RA BR,360,3.086664,
 2016-01-16 00:15:00Z,LYV,43.619,-96.220,NaN,-10.0,1.0,-14.0,NaN,NaN,1.0,1950.0,NaN,NaN,NaN,NaN,10.0,,340,4.629996,AO2
-2016-01-15 23:45:00Z,LZU,33.979,-83.959,NaN,9.0,1.0,6.0,NaN,NaN,1.0,150.0,NaN,NaN,NaN,NaN,5.0,,250,4.115552,ATIS X, RWY 25 JW
+2016-01-15 23:45:00Z,LZU,33.979,-83.959,NaN,9.0,1.0,6.0,NaN,NaN,1.0,150.0,NaN,NaN,NaN,NaN,5.0,,250,4.115552,ATIS X RWY 25 JW
 2016-01-15 23:55:00Z,M30,37.189,-88.750,NaN,6.9,0.375,3.3,NaN,NaN,0.375,840.0,0.375,1440.0,NaN,NaN,10.0,,320,5.658884,AO2 10116 20069
 2016-01-15 23:53:00Z,MAF,31.950,-102.180,NaN,13.0,0.0,-5.0,NaN,NaN,NaN,NaN,NaN,NaN,NaN,NaN,10.0,,260,3.086664,
 2016-01-16 00:23:00Z,MAI,30.799,-85.209,NaN,13.3,0.75,12.2,NaN,NaN,0.75,720.0,NaN,NaN,NaN,NaN,10.0,,330,2.057776,AO1 $