Pure BASH to remove spaces line by line

Here is a neat little script I wrote to remove spaces in CSVs recursively line by line using only pure Bash

#!/bin/bash
INPUT_CSV="test.csv"

set IFS=,
set oldIFS = $IFS
readarray -t arry < ${INPUT_CSV}

for i in "${arry[@]}"
do
   :
        res="${i//[^ ]}"
        cnt="${#res}"
        while [ ${cnt} -gt 0 ]; do
                i=${i/, /,}
                cnt=$[$cnt-1]
        done
        echo $i
done

If test.csv contains the following entries:

Bob, Jane, Naz, Sue, Max, Tom$
Zero, Alpha, Beta, Gama, Delta, Foxtrot#

Then the script will output:

Bob,Jane,Naz,Sue,Max,Tom$
Zero,Alpha,Beta,Gama,Delta,Foxtrot#

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