Remove text from a csv file using sed

I am trying to remove the ita from this file:

"1234ita","john","smith"
"56789ita","jim","thomas"

the command i am using is:

sed '/^ita/d' infile.csv > outfile.csv

it is running but doing nothing, very rarely use sed so trying to learn it any help would be appreciated

Have found the solution on another post i used:

sed 's/ita//' infile > outfile

Seems to work if anyone has a better solution can they let me know.

Thanks

Paul

sed 's/ita//g' infile > outfile