Remove CircleCI configuration, since Travis CI is working now.

.circleci/config.yml

@@ -1,27 +0,0 @@
-# Python CircleCI 2.0 configuration file
-# Check https://circleci.com/docs/2.0/language-python/ for more details
-#
-version: 2
-jobs:
-  build:
-    docker:
-      - image: selenium/standalone-chrome:3.141
-
-    working_directory: ~/repo
-
-    steps:
-      - checkout
-
-      - run:
-          name: install dependencies
-          command: |
-            sudo apt-get update && \
-            sudo apt-get install -y python3 python3-dev default-jdk python3-pillow python3-numpy python3-pip && \
-            sudo apt-get install -y libjpeg-dev libfreetype6 libfreetype6-dev zlib1g-dev optipng
-            sudo pip3 install selenium Pillow
-
-      - run:
-          name: run tests
-          command: |
-            python3 utils/build/build.py
-            python3 tests/run_tests.py