Fix a harmless typo from r310786

I copy/pasted a reference to an undefined shell variable.

MFC after:	2 weeks

tests/sys/geom/class/eli/conf.sh

@@ -52,7 +52,7 @@ for_each_geli_config_nointegrity() {
 		for secsize in 512 1024 2048 4096 8192; do
 			bytes=`expr $secsize \* $sectors + 512`b
 			md=$(attach_md -t malloc -s $bytes)
-			${func} $cipher $aalgo $secsize
+			${func} $cipher $secsize
 			geli detach ${md} 2>/dev/null
 			mdconfig -d -u ${md} 2>/dev/null
 		done