Most likely they're not installed. They're probably service books that are links to bring you to the webpage to download the actual app.
You can delete the service books, but they will be pushed back to you. Best bet is to hide them.
The difference between stupidity and genius is that genius has its limits.
When you take things for granted, the things you are granted, get taken.
Even a mosquito doesn't get a pat on the back until it starts to work.
Too many people miss the silver lining because they're expecting gold.
[BES 5.0.3 / GroupWise 2012 HP2]