Remove reference to connection soon when using buffered mode.
Remove reference to connection soon when using buffered mode.

modulexcite/PyMySQL,eibanez/PyMySQL,nju520/PyMySQL,xjzhou/PyMySQL,jwjohns/PyMySQL,wraziens/PyMySQL,mosquito/Tornado-MySQL,boneyao/PyMySQL,aio-libs/aiomysql,eibanez/PyMySQL,DashaChuk/PyMySQL,yeyinzhu3211/PyMySQL,lzedl/PyMySQL,wraziens/PyMySQL,PyMySQL/PyMySQL,anson-tang/PyMySQL,pymysql/pymysql,xjzhou/PyMySQL,PyMySQL/Tornado-MySQL,pulsar314/Tornado-MySQL,NunoEdgarGub1/PyMySQL,yeyinzhu3211/PyMySQL,Ting-y/PyMySQL,jheld/PyMySQL,lzedl/PyMySQL,methane/PyMySQL,Geoion/Tornado-MySQL,MartinThoma/PyMySQL