Revert "[mcrouter] Fix flavor unit tests"
Revert "[mcrouter] Fix flavor unit tests"

Summary: This reverts commit 2c6585ab89938c2e6317a3a991a732256b4750eb.

Test Plan: canary. D1914017 causes crashes
revert both.

Reviewed By: @​wanghuan

Differential Revision: D1958561
nvaller/mcrouter,synecdoche/mcrouter,facebook/mcrouter,reddit/mcrouter,easyfmxu/mcrouter,reddit/mcrouter,tempbottle/mcrouter,is00hcw/mcrouter,tempbottle/mcrouter,nvaller/mcrouter,is00hcw/mcrouter,leitao/mcrouter,evertrue/mcrouter,apinski-cavium/mcrouter,leitao/mcrouter,synecdoche/mcrouter,facebook/mcrouter,apinski-cavium/mcrouter,is00hcw/mcrouter,glensc/mcrouter,nvaller/mcrouter,zhlong73/mcrouter,yqzhang/mcrouter,facebook/mcrouter,synecdoche/mcrouter,synecdoche/mcrouter,apinski-cavium/mcrouter,glensc/mcrouter,apinski-cavium/mcrouter,yqzhang/mcrouter,easyfmxu/mcrouter,leitao/mcrouter,evertrue/mcrouter,facebook/mcrouter,easyfmxu/mcrouter,glensc/mcrouter,nvaller/mcrouter,evertrue/mcrouter,is00hcw/mcrouter,tempbottle/mcrouter,reddit/mcrouter,evertrue/mcrouter,zhlong73/mcrouter,zhlong73/mcrouter,zhlong73/mcrouter,reddit/mcrouter,yqzhang/mcrouter,tempbottle/mcrouter,leitao/mcrouter,glensc/mcrouter,yqzhang/mcrouter,easyfmxu/mcrouter