remove useless variable cleanup

pizza.sh

@@ -85,17 +85,6 @@ function arraytio { # im funny portmantaus are never bad
 		MEASURE[$INDEX]=$(echo "scale = 2; ($RATIO*$SIZE)/1" | bc -l) # we have to divide by 1 to actually apply the scale
 		echo ${INGREDIENT[$INDEX]}: ${MEASURE[$INDEX]}g # actually print the calculated number with label for each INDEX
 	done
-
-	# cleanup
-	unset INDEX
-	unset RATIO
-	unset SIZE
-	unset FSI
-	unset AREA
-	unset WIDTH
-	unset LENGTH
-	unset SQUAREPAN
-	unset DFSI
 }
 
 case $1 in # this parses the first argument (and actually calls our main functions), the units need to be removed before bc will accept it