Remove ui dependency from building bin

This makes go development faster at the expense of the ui build being
required. (Will eventually get make working properly instead of a
generic task runner)

Author: demophoon

Makefile

@@ -12,7 +12,7 @@ ui: proto
 	go generate ui/static.go
 
 .PHONY: bin
-bin: ui
+bin: proto
 	go build -o shrls -ldflags="\
 		-X github.com/demophoon/shrls/pkg/version.Version=${version}-dev \
 		-X github.com/demophoon/shrls/pkg/version.Build=${build} \