remove circleci config, don't push on drone build

.circleci/config.yml

@@ -1,10 +0,0 @@
-version: 2
-jobs:
- build:
-   machine: true
-   steps:
-     - checkout
-     - run: |
-         make dist
-     - store_artifacts:
-         path: output

.drone.yml

@@ -6,11 +6,8 @@ steps:
   image: plugins/docker
   settings:
     repo: sneak/feta
-    username:
+    dry_run: true
-      from_secret: docker_username
+    #auto_tag: true
-    password:
-      from_secret: docker_password
-    auto_tag: true
     tags:
       - ${DRONE_COMMIT_SHA}
       - ${DRONE_BRANCH}