cmd/internal/obj/x86: remove REGTMP
cmd/internal/obj/x86: remove REGTMP

Nothing uses this.

Change-Id: Ibc13066940bd2ea5c74d955a67f9dc531bef2758
Reviewed-on: https://go-review.googlesource.com/16344
Reviewed-by: Brad Fitzpatrick <ae9783c0b0efc69cd85ab025ddd17aa44cdc4aa5@golang.org>

miolini/go,Jordanzuo/go,goodlang/good,ImJasonH/go,ganboing/go-esx,ganboing/go-esx,gdey/go,goodlang/good,theif519/go,deft-code/go,momchil-velikov/go,Samurais/go,Cofyc/go,josharian/go,fjballest/golang,roth1002/go,ImJasonH/go,odeke-em/go,rachtsingh/gogojuice,codestation/go,binarycrusader/go,derekmarcotte/go,miolini/go,josharian/go,suncycheng/go,polyverse-security/go,roth1002/go,miolini/go,kim-racktop/go,vsekhar/elastic-go,4ad/go,sndnvaps/go,golang/go,nawawi/go,CAFxX/go,deft-code/go,akutz/go,miolini/go,vsekhar/elastic-go,fjballest/golang,ganboing/go-esx,odeke-em/go,4ad/go,roth1002/go,codestation/go,Samurais/go,suncycheng/go,malvira/go,vsekhar/elastic-go,mwhudson/go,momchil-velikov/go,linux-on-ibm-z/go,vanloswang/go,polyverse-security/go,kim-racktop/go,sndnvaps/go,kim-racktop/go,4ad/go,goodlang/good,Samurais/go,malvira/go,4ad/go,rachtsingh/gogojuice,Cofyc/go,vanloswang/go,cyberroadie/go,deft-code/go,Cofyc/go,roth1002/go,vsekhar/elastic-go,malvira/go,golang/go,fjballest/golang,suncycheng/go,sndnvaps/go,malvira/go,rachtsingh/gogojuice,malvira/go,rachtsingh/gogojuice,suncycheng/go,cyberroadie/go,cloudflare/go,momchil-velikov/go,Endika/go,josharian/go,fjballest/golang,kim-racktop/go,Endika/go,vanloswang/go,theif519/go,mwhudson/go,cyberroadie/go,kim-racktop/go,mwhudson/go,derekmarcotte/go,theif519/go,4ad/go,Endika/go,odeke-em/go,binarycrusader/go,akutz/go,akutz/go,codestation/go,fjballest/golang,Jordanzuo/go,suncycheng/go,ImJasonH/go,kim-racktop/go,josharian/go,ImJasonH/go,binarycrusader/go,theif519/go,Jordanzuo/go,odeke-em/go,vanloswang/go,mwhudson/go,Cofyc/go,nawawi/go,Jordanzuo/go,Endika/go,josharian/go,polyverse-security/go,CAFxX/go,Cofyc/go,odeke-em/go,binarycrusader/go,goodlang/good,vsekhar/elastic-go,4ad/go,roth1002/go,roth1002/go,theif519/go,Endika/go,ganboing/go-esx,momchil-velikov/go,linux-on-ibm-z/go,miolini/go,derekmarcotte/go,nawawi/go,kim-racktop/go,codestation/go,CAFxX/go,fjballest/golang,deft-code/go,nawawi/go,odeke-em/go,vanloswang/go,golang/go,golang/go,Jordanzuo/go,cloudflare/go,codestation/go,rachtsingh/gogojuice,ImJasonH/go,cyberroadie/go,CAFxX/go,CAFxX/go,linux-on-ibm-z/go,gdey/go,miolini/go,linux-on-ibm-z/go,derekmarcotte/go,cloudflare/go,polyverse-security/go,roth1002/go,ImJasonH/go,fjballest/golang,gdey/go,Samurais/go,golang/go,cloudflare/go,sndnvaps/go,mwhudson/go,roth1002/go,rachtsingh/gogojuice,cyberroadie/go,cyberroadie/go,polyverse-security/go,linux-on-ibm-z/go,Jordanzuo/go,gdey/go,vanloswang/go,binarycrusader/go,akutz/go,cloudflare/go,ganboing/go-esx,miolini/go,Jordanzuo/go,CAFxX/go,binarycrusader/go,derekmarcotte/go,malvira/go,Samurais/go,cloudflare/go,vsekhar/elastic-go,cloudflare/go,akutz/go,momchil-velikov/go,Cofyc/go,polyverse-security/go,codestation/go,rachtsingh/gogojuice,sndnvaps/go,akutz/go,vsekhar/elastic-go,ganboing/go-esx,codestation/go,cloudflare/go,linux-on-ibm-z/go,goodlang/good,ganboing/go-esx,deft-code/go,Endika/go,kim-racktop/go,goodlang/good,sndnvaps/go,CAFxX/go,suncycheng/go,miolini/go,golang/go,mwhudson/go,nawawi/go,rachtsingh/gogojuice,ganboing/go-esx,polyverse-security/go,nawawi/go,vanloswang/go,mwhudson/go,momchil-velikov/go,ImJasonH/go,goodlang/good,odeke-em/go,josharian/go,Samurais/go,suncycheng/go,deft-code/go,nawawi/go,momchil-velikov/go,ImJasonH/go,nawawi/go,deft-code/go,akutz/go,theif519/go,derekmarcotte/go,derekmarcotte/go,josharian/go,gdey/go,malvira/go,linux-on-ibm-z/go,sndnvaps/go,theif519/go,christopher-henderson/Go,binarycrusader/go,golang/go,theif519/go,golang/go,deft-code/go,Cofyc/go,odeke-em/go,Jordanzuo/go,Samurais/go,codestation/go,Cofyc/go,momchil-velikov/go,polyverse-security/go,vanloswang/go,gdey/go,akutz/go,goodlang/good,Endika/go,linux-on-ibm-z/go,malvira/go,derekmarcotte/go,binarycrusader/go,fjballest/golang,CAFxX/go,cyberroadie/go,sndnvaps/go,josharian/go,suncycheng/go,4ad/go,Samurais/go,mwhudson/go,4ad/go,Endika/go,cyberroadie/go,gdey/go,gdey/go,vsekhar/elastic-go