remove circle CI config

.circleci/config.yml

@@ -1,31 +0,0 @@
-version: 2.1
-jobs:
-  build:
-    docker:
-      - image: fpco/stack-build:lts
-    steps:
-      - checkout
-      - restore_cache:
-          name: Restore Cached Dependencies
-          keys:
-            - cci-demo-haskell-v1-{{ checksum "package.yaml" }}
-      - run:
-          name: Init Stack.yaml
-          command: stack init
-      - run:
-          name: Resolve/Update Dependencies
-          command: stack setup
-      - run:
-          name: Run tests
-          command: stack test
-      - run:
-          name: Install executable
-          command: stack install
-      - save_cache:
-          name: Cache Dependencies
-          key: cci-demo-haskell-v1-{{ checksum "package.yaml" }}
-          paths:
-            - ".stack-work"
-      - store_artifacts: # upload build artifact for display in CircleCI
-          path: ~/.local/bin/LtuPatternFactory
-          destination: LtuPatternFactory