Remove deprecated netgo build tag (Fixes #4)

.goreleaser.yml

@@ -3,11 +3,8 @@ builds:
   - id: tube
     binary: tube
     main: .
-    flags:
-      - -installsuffix=netgo
     tags:
       - embed
-      - netcgo
       - static_build
     ldflags: >-
       -w

Makefile

@@ -36,7 +36,7 @@ dev : server ## Build debug version of tube
 	@./tube
 
 server: generate ## Build the tube server
-	@$(GOCMD) build -tags "embed netgo static_build" -installsuffix netgo \
+	@$(GOCMD) build -tags "embed static_build" \
 		-ldflags "-w \
 		-X $(shell go list).Version=$(VERSION) \
 		-X $(shell go list).Commit=$(COMMIT)" \