pip-requires: Remove comments
pip-requires: Remove comments

This partially reverts commit bf58a6dcf3dcf6241fc1c9e58f3e43d2aa9ea7f2.

devstack (stable/juno) fails to process comments in this file.
While a fix for devstack has been proposed [1], it might take some time
to be merged.  I guess it's best to fix it in ryu, at least for a while.

[1] https://review.openstack.org/#/c/165709/

Signed-off-by: YAMAMOTO Takashi <458bba2e4a8704776b33478100c98529b639cd9e@valinux.co.jp>
Signed-off-by: FUJITA Tomonori <93dac1fe9c4b2a3957982200319981492ad4976e@lab.ntt.co.jp>

hisaharu/ryu,haniehrajabi/ryu,ttsubo/ryu,gareging/SDN_Framework,fujita/ryu,gopchandani/ryu,diogommartins/ryu,habibiefaried/ryu,zangree/ryu,zangree/ryu,Tesi-Luca-Davide/ryu,StephenKing/summerschool-2015-ryu,TakeshiTseng/ryu,habibiefaried/ryu,jalilm/ryu,lsqtongxin/ryu,John-Lin/ryu,openvapour/ryu,ttsubo/ryu,lsqtongxin/ryu,sivaramakrishnansr/ryu,osrg/ryu,darjus-amzn/ryu,Tejas-Subramanya/RYU_MEC,lsqtongxin/ryu,iwaseyusuke/ryu,sivaramakrishnansr/ryu,fkakuma/ryu,lagopus/ryu-lagopus-ext,ysywh/ryu,elahejalalpour/ELRyu,jalilm/ryu,Zouyiran/ryu,zyq001/ryu,StephenKing/ryu,lsqtongxin/ryu,Tesi-Luca-Davide/ryu,StephenKing/summerschool-2015-ryu,Tejas-Subramanya/RYU_MEC,lagopus/ryu-lagopus-ext,iwaseyusuke/ryu,alanquillin/ryu,Zouyiran/ryu,John-Lin/ryu,takahashiminoru/ryu,ysywh/ryu,ynkjm/ryu,alanquillin/ryu,ysywh/ryu,gareging/SDN_Framework,shinpeimuraoka/ryu,sivaramakrishnansr/ryu,Tejas-Subramanya/RYU_MEC,shinpeimuraoka/ryu,OpenState-SDN/ryu,takahashiminoru/ryu,fkakuma/ryu,shinpeimuraoka/ryu,lagopus/ryu-lagopus-ext,ynkjm/ryu,diogommartins/ryu,TakeshiTseng/ryu,haniehrajabi/ryu,zyq001/ryu,gopchandani/ryu,iwaseyusuke/ryu,alanquillin/ryu,fujita/ryu,StephenKing/summerschool-2015-ryu,ttsubo/ryu,hisaharu/ryu,OpenState-SDN/ryu,gopchandani/ryu,umkcdcrg01/ryu_openflow,elahejalalpour/ELRyu,TakeshiTseng/ryu,lsqtongxin/ryu,yamt/ryu,TakeshiTseng/ryu,gareging/SDN_Framework,darjus-amzn/ryu,habibiefaried/ryu,shinpeimuraoka/ryu,osrg/ryu,openvapour/ryu,umkcdcrg01/ryu_openflow,pichuang/ryu,OpenState-SDN/ryu,TakeshiTseng/ryu,osrg/ryu,fkakuma/ryu,diogommartins/ryu,umkcdcrg01/ryu_openflow,fkakuma/ryu,osrg/ryu,openvapour/ryu,yamt/ryu,gareging/SDN_Framework,ynkjm/ryu,zyq001/ryu,Zouyiran/ryu,ysywh/ryu,John-Lin/ryu,StephenKing/ryu,fkakuma/ryu,pichuang/ryu,Tesi-Luca-Davide/ryu,diogommartins/ryu,haniehrajabi/ryu,jalilm/ryu,sivaramakrishnansr/ryu,StephenKing/ryu,fujita/ryu,umkcdcrg01/ryu_openflow,osrg/ryu,alanquillin/ryu,StephenKing/ryu,zyq001/ryu,lagopus/ryu-lagopus-ext,haniehrajabi/ryu,ttsubo/ryu,yamt/ryu,pichuang/ryu,Tesi-Luca-Davide/ryu,diogommartins/ryu,openvapour/ryu,gopchandani/ryu,ynkjm/ryu,Tejas-Subramanya/RYU_MEC,iwaseyusuke/ryu,takahashiminoru/ryu,Zouyiran/ryu,alanquillin/ryu,fujita/ryu,StephenKing/summerschool-2015-ryu,lagopus/ryu-lagopus-ext,OpenState-SDN/ryu,John-Lin/ryu,fujita/ryu,yamt/ryu,StephenKing/summerschool-2015-ryu,yamt/ryu,ttsubo/ryu,darjus-amzn/ryu,hisaharu/ryu,jalilm/ryu,haniehrajabi/ryu,umkcdcrg01/ryu_openflow,hisaharu/ryu,sivaramakrishnansr/ryu,John-Lin/ryu,zangree/ryu,StephenKing/ryu,darjus-amzn/ryu,elahejalalpour/ELRyu,zangree/ryu,openvapour/ryu,takahashiminoru/ryu,elahejalalpour/ELRyu,Zouyiran/ryu,hisaharu/ryu,jalilm/ryu,OpenState-SDN/ryu,takahashiminoru/ryu,shinpeimuraoka/ryu,habibiefaried/ryu,elahejalalpour/ELRyu,zyq001/ryu,pichuang/ryu,habibiefaried/ryu,ynkjm/ryu,Tejas-Subramanya/RYU_MEC,darjus-amzn/ryu,pichuang/ryu,iwaseyusuke/ryu,Tesi-Luca-Davide/ryu,ysywh/ryu,gopchandani/ryu,gareging/SDN_Framework,zangree/ryu