(OK) Latex - Blank page appears before title page

[root@localhost paper-5-seem-Mobicom2016]# pwd
/root/桌面/paper-5-seem-Mobicom2016

[root@localhost paper-5-seem-Mobicom2016]# gedit sig-alternate-05-2015.cls

%\let\@concepts\@empty
%% Support for CCSXML file
%\RequirePackage{comment}
%\excludecomment{CCSXML}