Remove key from CI job (#313)

.circleci/config.yml

@@ -9,10 +9,6 @@ jobs:
       image: 'ubuntu-2004:202107-02'
     working_directory: ~/terraform-provider-watchtower
     steps:
-    - add_ssh_keys:
-        fingerprints:
-        # hc-github-team-secure-boundary github user,TF_ACC=1 ~/.go/bin/go test ./... -v $(TESTARGS) -timeout 120m to read private modules
-          - "d4:7f:b2:f7:6f:4d:e7:21:cc:d2:b7:6a:8b:68:e6:d4"
     - checkout
     - run:
         name: "Install go"