Remove check for standard-minifier-js@2.1.x from `bundle-visualizer`.
Remove check for standard-minifier-js@2.1.x from `bundle-visualizer`.

While this was helpful in one of the incarnations of the
bundle-visualizer during development it isn't relevant anymore since
the `.stats.json` will not be present in the bundle unless it was
created by a recent version of `standard-minifier-js` which passed
in `stats` (no older versions did this).

Removing this check will also make it possible for other minifiers to be
used with `bundle-visualizer` without them also needing to fork make
their own version.

Hansoft/meteor,Hansoft/meteor,Hansoft/meteor,Hansoft/meteor,Hansoft/meteor,Hansoft/meteor,Hansoft/meteor