Remove stub for deprecated onActiveChanged
Remove stub for deprecated onActiveChanged

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