Remove redundant event loop fd processing
Remove redundant event loop fd processing

Reason:
https://github.com/antirez/redis/pull/1450#issuecomment-30432925

Closes #1450

ttuna/msot-redis,darksideofthemoo/redis-histogram,maodeyi/redis_lua,MSOpenTech/redis,ttuna/msot-redis,jxwr/redis,HunanTV/redis,MSOpenTech/redis,ksarch-saas/redis,himoca/redis,jxwr/redis,louisliangjun/redis,maodeyi/redis_lua,maodeyi/redis_lua,splitice/redis,louisliangjun/redis,louisliangjun/redis,ttuna/msot-redis,ramonsnir/redis,ttuna/msot-redis,MSOpenTech/redis,splitice/redis,darksideofthemoo/redis-histogram,xuzhezhaozhao/redis_reading,xuzhezhaozhao/redis_reading,slfs007/mk-redis,splitice/redis,MSOpenTech/redis,slfs007/mk-redis,spearhead-ea/redis,ksarch-saas/redis,ttuna/msot-redis,HunanTV/redis,ksarch-saas/redis,darksideofthemoo/redis-histogram,louisliangjun/redis,HunanTV/redis,xuzhezhaozhao/redis_reading,slfs007/mk-redis,himoca/redis,MSOpenTech/redis,xuzhezhaozhao/redis_reading,darksideofthemoo/redis-histogram,ramonsnir/redis,himoca/redis,ksarch-saas/redis,spearhead-ea/redis,spearhead-ea/redis,splitice/redis,ramonsnir/redis,jxwr/redis,HunanTV/redis