fix circleci file

Author: aperezg

.circleci/config.yml

@@ -9,7 +9,6 @@ jobs:
     steps:
       - checkout
       - run: go test -v -race ./...
-      - run: go build -race cmd/killgrave/main.go
   build-go1_12_9:
     docker:
       - image: circleci/golang:1.12.9