more pure bash to speed up things

dabo/functions/get_vars_from_csv.sh

@@ -14,7 +14,6 @@ function get_vars_from_csv {
   fi
   f_all_vars="f_market_performance=${f_market_performance}"
  
-  set -x
   # read last 4 lines in array if not given
   if [ -z "${f_last_lines_array}" ]
   then
@@ -23,8 +22,8 @@ function get_vars_from_csv {
 
   # if there are not four lines
   if [ -z "${f_last_lines_array[3]}" ]
-  then 
-    set +x
+  then
+    unset f_last_lines_array
     return 1
   fi