How to remove app shortcuts from default opening types? I like to remove some of my app shortcuts from default opening types, such as some app I already removed like browsers (some Chinese browsers I downloaded when my Chrome had some issue in China) but still would show up when I click on a web shortcut (and it prevent me from selecting Chrome as my default browser). And some duplicated shortcuts like wifi assistance (when I want to open wifi setting it will show two of them). And some shortcuts I don't even think they are in the correct category like Taobao (a Chinese shopping app) would want to be open when I open a web link or a photo.

P.S., looks like Chinese app makers really mess up your Android system with tons of random default app shortcuts.
You normally cannot adjust default applications individually once they have been set. The best option would be to navigate to the app in the Application Manager and press they Clear Defaults button. You will need to set other default for the app again, but it will clear out the defaults you don't want as well.