Remove unused crop params in test dir

test/zzz-cropparams-almass/crop_data_general.csv

-name,minsowdate,maxsowdate,minharvestdate,maxharvestdate,mingrowthtemp,group,biomass_scale,is_c4_plant,sowingdensity
-spring rape,NA,NA,NA,NA,NA,grain,1.071,false,75
-winter rape,20 August,25 August,NA,NA,NA,grain,1.071,false,75
-winter wheat,15 October,31 October,NA,NA,0,grain,1.0,false,400
-spring wheat,NA,NA,NA,NA,NA,grain,1.0,false,475
-winter barley,15 September,30 September,NA,NA,0,grain,0.857,false,340
-spring barley,1 March,10 April,NA,NA,0,grain,0.857,false,360
-undersown spring barley,NA,NA,NA,NA,0,grain,0.857,false,NA
-winter rye,23 September,15 October,NA,NA,NA,grain,0.857,false,290
-triticale,25 September,10 October,NA,NA,NA,grain,1.0,false,320
-oats,NA,NA,NA,NA,NA,grain,0.857,false,385
-maize,15 April,30 April,NA,NA,8,grain,1.0,true,13
-potatoes,NA,NA,NA,NA,4,root,0.857,false,5
-carrots,NA,NA,NA,NA,NA,root,0.7857,false,160
-beet,15 March,10 May,NA,NA,NA,root,0.857,false,16
-sunflower,25 March,15 April,NA,NA,NA,other,1.0,false,8
-lucerne,NA,NA,NA,NA,NA,legumes,1.2,false,NA
-peas/beans,15 February,15 March,NA,NA,5,legumes,0.857,false,35/80
-silage clover/grass,NA,NA,NA,NA,NA,legumes,1.1,false,NA
-fodder/clover,NA,NA,NA,NA,NA,legumes,1.2,false,NA
-lawn,NA,NA,NA,NA,NA,grass,0.5,false,NA
-permanent grassland (grazed),NA,NA,NA,NA,NA,grass,1.1,false,NA
-permanent grassland (seeded),NA,NA,NA,NA,NA,grass,1.1,false,NA
-permanent grassland (low yield),NA,NA,NA,NA,NA,grass,1.0,false,NA
-permanent set-aside,NA,NA,NA,NA,NA,semi-natural,0.7857,false,NA
-natural grass,NA,NA,NA,NA,NA,semi-natural,0.567,false,NA
-no growth,NA,NA,NA,NA,NA,semi-natural,0.0,false,NA
-heath,NA,NA,NA,NA,NA,semi-natural,0.567,false,NA