Remove useless comment from serverCron().
Remove useless comment from serverCron().

The behavior is well specified by the code itself.

PKRoma/redis,spinlock/redis,pmem/redis,PKRoma/redis,spinlock/redis,charsyam/redis,GitHubMota/redis,GitHubMota/redis,neomantra/redis,soveran/redis,soveran/redis,neomantra/redis,pmem/redis,oranagra/redis,neomantra/redis,soloestoy/redis,rogerchina/redis,ofirluzon/redis,oranagra/redis,spinlock/redis,pmem/redis,yossigo/redis,soloestoy/redis,rogerchina/redis,yossigo/redis,ofirluzon/redis,soveran/redis,charsyam/redis,antirez/redis,yossigo/redis,ofirluzon/redis,antirez/redis,oranagra/redis,nnog/redis,yossigo/redis,ofirluzon/redis,soveran/redis,nnog/redis,GitHubMota/redis,antirez/redis,PKRoma/redis,rogerchina/redis,soloestoy/redis,charsyam/redis,oranagra/redis,PKRoma/redis,ctripcorp/redis,spinlock/redis,PKRoma/redis,GitHubMota/redis,nnog/redis,ctripcorp/redis,soloestoy/redis,rogerchina/redis,pmem/redis,ctripcorp/redis,yossigo/redis,ofirluzon/redis,neomantra/redis,soloestoy/redis,charsyam/redis,oranagra/redis,ctripcorp/redis,antirez/redis,charsyam/redis,neomantra/redis,nnog/redis