* Subtitle::SRT : remove unused variable

lib/Subtitle/SRT.pm

@@ -57,7 +57,6 @@ sub new_event { return +{ id => undef, timing => undef, text => undef }; }
 
 sub parse {
   my ($self, $lines) = @_;
-  my $expected = 'id';
   my $linenum = 0;
   my $event;