Remove nonFatal exceptions for willNavigate and newWindowPrevented
Remove nonFatal exceptions for willNavigate and newWindowPrevented

We never saw any of these reported so there's no need for them any more.

j-f1/forked-desktop,shiftkey/desktop,shiftkey/desktop,kactus-io/kactus,say25/desktop,artivilla/desktop,j-f1/forked-desktop,artivilla/desktop,say25/desktop,j-f1/forked-desktop,kactus-io/kactus,kactus-io/kactus,say25/desktop,artivilla/desktop,desktop/desktop,shiftkey/desktop,shiftkey/desktop,artivilla/desktop,say25/desktop,desktop/desktop,j-f1/forked-desktop,desktop/desktop,desktop/desktop,kactus-io/kactus