rnaProduct.t: get rid of package variable $verbose
rnaProduct.t: get rid of package variable $verbose

Toggling it has no effect on output verbosity in this test suite, I see no
mention of it anywhere in either TAP::Harness, Test::Simple or
Test::More documentation, and perlcritic complains about it.

muffato/ensembl,muffato/ensembl,james-monkeyshines/ensembl,muffato/ensembl,james-monkeyshines/ensembl,james-monkeyshines/ensembl,Ensembl/ensembl,Ensembl/ensembl,Ensembl/ensembl,james-monkeyshines/ensembl,Ensembl/ensembl,muffato/ensembl