Remove unnecessary vomnibar click code.
Remove unnecessary vomnibar click code.

This is no longer necessary since the help page is in an iframe.

philc/vimium,willsALMANJ/vimium,poacher2k/vimium,gdh1995/vimium,philc/vimium,mrmr1993/vimium,smblott-github/vimium,poacher2k/vimium,mrmr1993/vimium,philc/vimium,poacher2k/vimium,willsALMANJ/vimium,decaffeinate-examples/vimium,gdh1995/vimium,gdh1995/vimium,mrmr1993/vimium,willsALMANJ/vimium,smblott-github/vimium,decaffeinate-examples/vimium,decaffeinate-examples/vimium,smblott-github/vimium