Remove travis - migrated to Github Actions

.travis.yml

@@ -1,20 +0,0 @@
-language: c
-sudo: false
-after_success: bash <(curl -s https://codecov.io/bash)
-install:
-  - if test "$TRAVIS_OS_NAME" = linux; then sudo apt-get install libmbedtls-dev; else HOMEBREW_NO_AUTO_UPDATE=1 brew install jq mbedtls; fi
-os:
-  - linux
-  - osx
-compiler:
-  - clang
-  - gcc
-script: make test test++
-matrix:
-  include:
-    - os: linux
-      compiler: gcc
-      script: make mg_prefix vc98 vc2017 ex
-      sudo: required
-      services:
-        - docker

README.md

@@ -1,7 +1,6 @@
 # Mongoose - Embedded Web Server / Embedded Networking Library
 
 ![License: GPLv2](https://img.shields.io/badge/license-GPL_2-green.svg "License")
-[![CircleCI Status](https://travis-ci.org/cesanta/mongoose.svg?branch=master)](https://travis-ci.org/cesanta/mongoose)
 ![Build Status]( https://github.com/cesanta/mongoose/workflows/build/badge.svg)
 [![Code Coverage](https://codecov.io/gh/cesanta/mongoose/branch/master/graph/badge.svg)](https://codecov.io/gh/cesanta/mongoose)