:lipstick: remove duplicate `5-threaded`

Thanks again Travis CI!

library/perl

@@ -11,7 +11,7 @@ Directory: 5.026.000-64bit,threaded
 Tags: 5.24, 5.24.2
 Directory: 5.024.002-64bit
 
-Tags: 5-threaded, 5.24-threaded, 5.24.2-threaded
+Tags: 5.24-threaded, 5.24.2-threaded
 Directory: 5.024.002-64bit,threaded
 
 Tags: 5.22, 5.22.4