Remove tests for unsupported new-window code
Remove tests for unsupported new-window code

There is no longer an event for new-window on webview. Instead this logic is handled with a process level add-new-contents event. There are already tests for these as well in the application window test.  I don't think they are fully exhaustive yet, but neither is what is being removed here.

Auditors: da39a3ee5e6b4b0d3255bfef95601890afd80709@bsclifton

timborden/browser-laptop,timborden/browser-laptop,pmkary/braver,luixxiul/browser-laptop,luixxiul/browser-laptop,luixxiul/browser-laptop,diasdavid/browser-laptop,darkdh/browser-laptop,diasdavid/browser-laptop,luixxiul/browser-laptop,darkdh/browser-laptop,timborden/browser-laptop,pmkary/braver,diasdavid/browser-laptop,darkdh/browser-laptop,pmkary/braver,pmkary/braver,darkdh/browser-laptop,diasdavid/browser-laptop,timborden/browser-laptop