Remove Circle CI badge and conf

README.rst

@@ -7,9 +7,6 @@ PlatformIO
 .. image:: https://ci.appveyor.com/api/projects/status/dku0h2rutfj0ctls/branch/develop?svg=true
     :target: https://ci.appveyor.com/project/ivankravets/platformio
     :alt: AppVeyor.CI Build Status
-.. image:: https://circleci.com/gh/platformio/platformio/tree/develop.svg?style=svg
-    :target: https://circleci.com/gh/platformio/platformio/tree/develop
-    :alt: Circle.CI Build Status
 .. image:: https://requires.io/github/platformio/platformio/requirements.svg?branch=develop
     :target: https://requires.io/github/platformio/platformio/requirements/?branch=develop
     :alt: Requirements Status

circle.yml

@@ -1,16 +0,0 @@
-machine:
-    python:
-        version: 2.7
-
-checkout:
-    post:
-        - git submodule update --init --recursive
-        - pip install -U pip setuptools virtualenv
-
-dependencies:
-    pre:
-        - pip install tox
-
-test:
-    override:
-        - tox -e py27