don’t add bower version

bower/spec@a325da3

Author: ryanflorence

scripts/release.sh

@@ -22,7 +22,6 @@ next_ref="v$next_version"
 npm test -- --single-run
 
 update_version 'package.json' $next_version
-update_version 'bower.json' $next_version
 
 $changelog -t $next_ref