Fixed make fmt-check

.drone.yml

@@ -85,10 +85,8 @@ workspace:
   path: src/git.kolaente.de/sofaraum/client
 
 trigger:
-  branch:
-    - master
   event:
-    - push
+    - tag
 
 steps:
   # Needed to get the versions right as they depend on tags

Makefile

@@ -59,9 +59,6 @@ test:
 	go test -cover -coverprofile cover.out $(PACKAGES)
 	go tool cover -html=cover.out -o cover.html
 
-required-gofmt-version:
-	@go version  | grep -q '\(1.7\|1.8\|1.9\|1.10\|1.11\)' || { echo "We require go version 1.7, 1.8, 1.9, 1.10 or 1.11 to format code" >&2 && exit 1; }
-
 .PHONY: lint
 lint:
 	@hash golint > /dev/null 2>&1; if [ $$? -ne 0 ]; then \
@@ -70,11 +67,11 @@ lint:
 	for PKG in $(PACKAGES); do golint -set_exit_status $$PKG || exit 1; done;
 
 .PHONY: fmt
-fmt: required-gofmt-version
+fmt:
 	$(GOFMT) -w $(GOFILES)
 
 .PHONY: fmt-check
-fmt-check: required-gofmt-version
+fmt-check:
 	# get all go files and run go fmt on them
 	@diff=$$($(GOFMT) -d $(GOFILES)); \
 	if [ -n "$$diff" ]; then \