Remove "precise" test env from Travis-CI config
Remove "precise" test env from Travis-CI config

pablohoffman/scrapy,w495/scrapy,kmike/scrapy,eLRuLL/scrapy,eLRuLL/scrapy,redapple/scrapy,Ryezhang/scrapy,elacuesta/scrapy,umrashrf/scrapy,darkrho/scrapy-scrapy,ssteo/scrapy,elacuesta/scrapy,wenyu1001/scrapy,rolando/scrapy,umrashrf/scrapy,crasker/scrapy,starrify/scrapy,scrapy/scrapy,scrapy/scrapy,wenyu1001/scrapy,arush0311/scrapy,starrify/scrapy,rootAvish/scrapy,crasker/scrapy,Ryezhang/scrapy,foromer4/scrapy,shaform/scrapy,foromer4/scrapy,jc0n/scrapy,redapple/scrapy,pawelmhm/scrapy,dangra/scrapy,shaform/scrapy,jc0n/scrapy,rolando-contrib/scrapy,rootAvish/scrapy,pablohoffman/scrapy,wujuguang/scrapy,rolando-contrib/scrapy,eLRuLL/scrapy,ssteo/scrapy,rolando-contrib/scrapy,dangra/scrapy,arush0311/scrapy,w495/scrapy,wenyu1001/scrapy,taito/scrapy,redapple/scrapy,Parlin-Galanodel/scrapy,shaform/scrapy,Parlin-Galanodel/scrapy,rolando/scrapy,kmike/scrapy,crasker/scrapy,jc0n/scrapy,GregoryVigoTorres/scrapy,wujuguang/scrapy,dangra/scrapy,pawelmhm/scrapy,wujuguang/scrapy,finfish/scrapy,ArturGaspar/scrapy,Parlin-Galanodel/scrapy,ssteo/scrapy,elacuesta/scrapy,arush0311/scrapy,ArturGaspar/scrapy,ArturGaspar/scrapy,finfish/scrapy,pablohoffman/scrapy,GregoryVigoTorres/scrapy,foromer4/scrapy,starrify/scrapy,umrashrf/scrapy,taito/scrapy,rolando/scrapy,darkrho/scrapy-scrapy,kmike/scrapy,w495/scrapy,Ryezhang/scrapy,finfish/scrapy,rootAvish/scrapy,darkrho/scrapy-scrapy,GregoryVigoTorres/scrapy,pawelmhm/scrapy,scrapy/scrapy,taito/scrapy