Remove go 1.4 from the build matrix
Remove go 1.4 from the build matrix

jen20/packer,mohae/packer,smaato/packer,mkuzmin/packer,mitchellh/packer,grange74/packer,jimmythedog/packer,grange74/packer,pvandervelde/packer,esemplare/packer,tas50/packer,timsutton/packer,arizvisa/packer,grubernaut/packer,tsmolka/packer,danschaffer/packer,c22/packer,mafrosis/packer,yoctocloud/packer,sneal/packer,jimmythedog/packer,tb3088/packer,tas50/packer,samdunne/packer,samdunne/packer,atlassian/packer,ChrisLundquist/packer,mkuzmin/packer,mwhooker/packer,marc-ta/packer,mwhooker/packer,ChrisLundquist/packer,grubernaut/packer,monkeylittleinc/packer,zhuzhih2017/packer,smaato/packer,legal90/packer,marc-ta/packer,jen20/packer,zhuzhih2017/packer,smaato/packer,pvandervelde/packer,mansunkuo/packer,rnaveiras/packer,mitchellh/packer,c22/packer,paulmey/packer,jimmythedog/packer,timsutton/packer,quantang/packer,Akasurde/packer,routelastresort/packer,mefellows/packer,tb3088/packer,legal90/packer,mayflower/packer,ChrisLundquist/packer,c22/packer,esemplare/packer,life360/packer,rickard-von-essen/packer,ChrisLundquist/packer,Akasurde/packer,quantang/packer,rickard-von-essen/packer,mansunkuo/packer,mitchellh/packer,p1-nico/packer,mayflower/packer,vtolstov/packer,sneal/packer,mefellows/packer,sean-/packer,sean-/packer,pvandervelde/packer,rnaveiras/packer,jen20/packer,life360/packer,p1-nico/packer,dave2/packer,zhuzhih2017/packer,arizvisa/packer,pieter-lazzaro/packer,pieter-lazzaro/packer,mafrosis/packer,ricardclau/packer,yoctocloud/packer,tsmolka/packer,dayglojesus/packer,ChrisLundquist/packer,KohlsTechnology/packer,danschaffer/packer,rnaveiras/packer,Akasurde/packer,tb3088/packer,pecigonzalo/packer,vtolstov/packer,ricardclau/packer,tsmolka/packer,p1-nico/packer,markpeek/packer,atlassian/packer,taliesins/packer,quantang/packer,mayflower/packer,marc-ta/packer,rnaveiras/packer,smaato/packer,markpeek/packer,atlassian/packer,zhuzhih2017/packer,markpeek/packer,grubernaut/packer,vtolstov/packer,paulmey/packer,p1-nico/packer,KohlsTechnology/packer,monkeylittleinc/packer,taliesins/packer,dave2/packer,legal90/packer,life360/packer,samdunne/packer,ricardclau/packer,life360/packer,mohae/packer,pvanbuijtene/packer,hashicorp/packer,markpeek/packer,pieter-lazzaro/packer,markpeek/packer,youhong316/packer,monkeylittleinc/packer,hashicorp/packer,tb3088/packer,dave2/packer,esemplare/packer,threatstream/packer,threatstream/packer,paulmey/packer,dayglojesus/packer,timsutton/packer,pvanbuijtene/packer,taliesins/packer,danschaffer/packer,samdunne/packer,mitchellh/packer,yoctocloud/packer,mafrosis/packer,sean-/packer,dave2/packer,mayflower/packer,threatstream/packer,rickard-von-essen/packer,c22/packer,hashicorp/packer,pieter-lazzaro/packer,youhong316/packer,grange74/packer,mefellows/packer,smaato/packer,youhong316/packer,esemplare/packer,p1-nico/packer,youhong316/packer,taliesins/packer,pieter-lazzaro/packer,monkeylittleinc/packer,arizvisa/packer,jen20/packer,mayflower/packer,rickard-von-essen/packer,grubernaut/packer,monkeylittleinc/packer,KohlsTechnology/packer,pvandervelde/packer,zhuzhih2017/packer,dayglojesus/packer,grubernaut/packer,bryson/packer,pecigonzalo/packer,mwhooker/packer,arizvisa/packer,dayglojesus/packer,legal90/packer,ricardclau/packer,jen20/packer,mwhooker/packer,bryson/packer,sean-/packer,rnaveiras/packer,danschaffer/packer,mohae/packer,Akasurde/packer,jen20/packer,p1-nico/packer,boumenot/packer,yoctocloud/packer,KohlsTechnology/packer,samdunne/packer,bryson/packer,boumenot/packer,timsutton/packer,sean-/packer,mansunkuo/packer,sean-/packer,threatstream/packer,dave2/packer,routelastresort/packer,boumenot/packer,mansunkuo/packer,bryson/packer,mitchellh/packer,boumenot/packer,sneal/packer,markpeek/packer,routelastresort/packer,mansunkuo/packer,quantang/packer,mohae/packer,atlassian/packer,arizvisa/packer,mefellows/packer,tas50/packer,mkuzmin/packer,pvanbuijtene/packer,paulmey/packer,life360/packer,arizvisa/packer,bryson/packer,pvanbuijtene/packer,quantang/packer,mohae/packer,zhuzhih2017/packer,hashicorp/packer,mafrosis/packer,pecigonzalo/packer,bryson/packer,grange74/packer,pieter-lazzaro/packer,tas50/packer,esemplare/packer,tb3088/packer,KohlsTechnology/packer,atlassian/packer,pvanbuijtene/packer,pvandervelde/packer,jimmythedog/packer,routelastresort/packer,marc-ta/packer,rickard-von-essen/packer,mafrosis/packer,Akasurde/packer,vtolstov/packer,legal90/packer,grange74/packer,ricardclau/packer,taliesins/packer,tas50/packer,taliesins/packer,smaato/packer,jimmythedog/packer,pvandervelde/packer,threatstream/packer,mwhooker/packer,routelastresort/packer,tb3088/packer,youhong316/packer,grubernaut/packer,vtolstov/packer,mkuzmin/packer,timsutton/packer,c22/packer,timsutton/packer,mkuzmin/packer,c22/packer,sneal/packer,tsmolka/packer,tas50/packer,ricardclau/packer,tsmolka/packer,ChrisLundquist/packer,atlassian/packer,yoctocloud/packer,sneal/packer,mkuzmin/packer,KohlsTechnology/packer,pecigonzalo/packer,paulmey/packer,boumenot/packer,dayglojesus/packer,paulmey/packer,youhong316/packer,danschaffer/packer,tsmolka/packer,dave2/packer,rnaveiras/packer