Revert "Added in option, etag, for control of ETag header if desired"
Revert "Added in option, etag, for control of ETag header if desired"

This reverts commit a11399928547074d16fdebba049d268e000cf94c.

khirayama/connect,tanveer12332/connect,keenwon/connect,RoseTHERESA/connect,khalerc/connect,austincitylimits/connect,lian774739140/connect,liuwei9413/connect,qitianchan/connect,mi2oon/connect,llwanghong/connect,gtomitsuka/connect,wghust/connect,behind2/connect,senchalabs/connect,davehorton/drachtio,chinazhaghai/connect,brianloveswords/connect,mi2oon/connect,dkfiresky/connect,RickyDan/connect