Commenting, or removing, use strict doesn't make errors go away, it just makes perl hide the errors from you, so don't do it.

my $data = do {local $/; <FILE>};
$data =~ s/"//g;
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will remove all the quotes from the slurped text. If you want to remove just the quotes at the start and end of words, try using Text::CSV and post back if you have any problems.