Change linter install process

Signed-off-by: William Douglas <[email protected]>

Makefile

@@ -37,6 +37,7 @@ checkcoverage:
 
 .PHONY: lint
 lint:
+	@rm -f $(gopath)/bin/golangci-lint
 	@if ! $(gopath)/bin/golangci-lint --version &>/dev/null; then \
 		echo "Installing linters..."; \
 		curl -sSfL https://raw.githubusercontent.com/golangci/golangci-lint/master/install.sh | sh -s -- -b $(gopath)/bin v1.55.2; \