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Removing same sized files with perl

The following finds .txt files that have the same size and removes all but one per size. 
use strict;
use warnings;

my @files = <*.txt>;

my %file_sizes;

foreach my $file (@files) {
  push @{$file_sizes{(stat ($file))[7]}}, $file;
}

foreach my $size (keys %file_sizes) {
  my @same_sized_files = @{$file_sizes{$size}};
  print join "-", @same_sized_files;
  unlink @same_sized_files[1 .. $#same_sized_files];
  print "\n";
}