Makefile: suggests install.tools

Signed-off-by: Antonio Murdaca <runcom@redhat.com>

.tool/lint

@@ -4,11 +4,6 @@ set -o errexit
 set -o nounset
 set -o pipefail
 
-if [ ! $(command -v gometalinter) ]; then
-	go get -u github.com/alecthomas/gometalinter
-	gometalinter --update --install
-fi
-
 for d in $(find . -type d -not -iwholename '*.git*' -a -not -iname '.tool' -a -not -iwholename '*vendor*'); do
 	gometalinter \
 		--exclude='error return value not checked.*(Close|Log|Print).*\(errcheck\)$' \