remove circleci

Signed-off-by: CrazyMax <crazy-max@users.noreply.github.com>

.circleci/config.yml

@@ -1,38 +0,0 @@
-version: 2
-
-jobs:
-
-  validate:
-    working_directory: /work
-    docker: [{image: 'docker:20.10-git'}]
-    environment:
-      DOCKER_BUILDKIT: 1
-    steps:
-      - checkout
-      - setup_remote_docker:
-          version: 20.10.6
-          reusable: true
-          exclusive: false
-      - run:
-          name: "Docker version"
-          command: docker version
-      - run:
-          name: "Docker info"
-          command: docker info
-      - run:
-          name: "Validate - build image"
-          command: |
-            rm -f .dockerignore # include .git
-            docker build --progress=plain -f dockerfiles/Dockerfile.dev --tag cli-builder-with-git:$CIRCLE_BUILD_NUM .
-      - run:
-          name: "Validate Vendor, Docs, and Code Generation"
-          command: |
-            docker run --rm cli-builder-with-git:$CIRCLE_BUILD_NUM \
-                make ci-validate
-          no_output_timeout: 15m
-
-workflows:
-  version: 2
-  ci:
-    jobs:
-      - validate

Makefile

@@ -77,8 +77,3 @@ yamldocs: ## generate documentation YAML files consumed by docs repo
 .PHONY: help
 help: ## print this help
 	@awk 'BEGIN {FS = ":.*?## "} /^[a-zA-Z0-9_-]+:.*?## / {gsub("\\\\n",sprintf("\n%22c",""), $$2);printf "\033[36m%-20s\033[0m %s\n", $$1, $$2}' $(MAKEFILE_LIST)
-
-.PHONY: ci-validate
-ci-validate:
-	time make manpages
-	time make yamldocs

README.md

@@ -1,9 +1,8 @@
 # Docker CLI
 
 [![PkgGoDev](https://img.shields.io/badge/go.dev-docs-007d9c?logo=go&logoColor=white)](https://pkg.go.dev/github.com/docker/cli)
-[![Build Status](https://img.shields.io/github/workflow/status/docker/cli/build?logo=github)](https://github.com/docker/cli/actions?query=workflow%3Abuild)
-[![Test Status](https://img.shields.io/github/workflow/status/docker/cli/test?logo=github)](https://github.com/docker/cli/actions?query=workflow%3Atest)
-[![CircleCI Status](https://img.shields.io/circleci/build/github/docker/cli/master?logo=circleci)](https://circleci.com/gh/docker/cli/tree/master)
+[![Build Status](https://img.shields.io/github/workflow/status/docker/cli/build?label=build&logo=github)](https://github.com/docker/cli/actions?query=workflow%3Abuild)
+[![Test Status](https://img.shields.io/github/workflow/status/docker/cli/test?label=test&logo=github)](https://github.com/docker/cli/actions?query=workflow%3Atest)
 [![Go Report Card](https://goreportcard.com/badge/github.com/docker/cli)](https://goreportcard.com/report/github.com/docker/cli)
 [![Codecov](https://codecov.io/gh/docker/cli/branch/master/graph/badge.svg)](https://codecov.io/gh/docker/cli)