Makefile: remove --update from gometalinter install
Makefile: remove --update from gometalinter install

cezarsa/tsuru,cezarsa/tsuru,ggarnier/tsuru,ArxdSilva/tsuru,ArxdSilva/tsuru,tsuru/tsuru,tsuru/tsuru,ArxdSilva/tsuru,guilhermebr/tsuru,ggarnier/tsuru,ArxdSilva/tsuru,guilhermebr/tsuru,guilhermebr/tsuru,tsuru/tsuru,guilhermebr/tsuru,cezarsa/tsuru,cezarsa/tsuru,ggarnier/tsuru,tsuru/tsuru,ggarnier/tsuru