Remove both browser modules to avoid conflicts when this lib is used …

[mcarriere]

…in a lazy loaded module.

[daveryderoxford]

I also encountered this issue so would value this push request.

[anurag-shj]

I'm getting this error, while importing AngularImageViewerModule:
Error: Providers from the BrowserModule have already been loaded. If you need access to common directives such as NgIf and NgFor, import the CommonModule instead.