chore: remove all dead badges

Author: ahlinc

cli/README.md

@@ -1,8 +1,6 @@
 Tree-sitter CLI
 ===============
 
-[![Build Status](https://travis-ci.org/tree-sitter/tree-sitter.svg?branch=master)](https://travis-ci.org/tree-sitter/tree-sitter)
-[![Build status](https://ci.appveyor.com/api/projects/status/vtmbd6i92e97l55w/branch/master?svg=true)](https://ci.appveyor.com/project/maxbrunsfeld/tree-sitter/branch/master)
 [![Crates.io](https://img.shields.io/crates/v/tree-sitter-cli.svg)](https://crates.io/crates/tree-sitter-cli)
 
 The Tree-sitter CLI allows you to develop, test, and use Tree-sitter grammars from the command line. It works on MacOS, Linux, and Windows.

highlight/README.md

@@ -1,7 +1,5 @@
 # `tree-sitter-highlight`
 
-[![Build Status](https://travis-ci.org/tree-sitter/tree-sitter.svg?branch=master)](https://travis-ci.org/tree-sitter/tree-sitter)
-[![Build status](https://ci.appveyor.com/api/projects/status/vtmbd6i92e97l55w/branch/master?svg=true)](https://ci.appveyor.com/project/maxbrunsfeld/tree-sitter/branch/master)
 [![Crates.io](https://img.shields.io/crates/v/tree-sitter-highlight.svg)](https://crates.io/crates/tree-sitter-highlight)
 
 ### Usage

lib/binding_rust/README.md

@@ -1,7 +1,5 @@
 # Rust Tree-sitter
 
-[![Build Status](https://travis-ci.org/tree-sitter/tree-sitter.svg?branch=master)](https://travis-ci.org/tree-sitter/tree-sitter)
-[![Build status](https://ci.appveyor.com/api/projects/status/vtmbd6i92e97l55w/branch/master?svg=true)](https://ci.appveyor.com/project/maxbrunsfeld/tree-sitter/branch/master)
 [![Crates.io](https://img.shields.io/crates/v/tree-sitter.svg)](https://crates.io/crates/tree-sitter)
 
 Rust bindings to the [Tree-sitter][] parsing library.

lib/binding_web/README.md

@@ -1,8 +1,6 @@
 Web Tree-sitter
 ===============
 
-[![Build Status](https://travis-ci.org/tree-sitter/tree-sitter.svg?branch=master)](https://travis-ci.org/tree-sitter/tree-sitter)
-
 WebAssembly bindings to the [Tree-sitter](https://github.com/tree-sitter/tree-sitter) parsing library.
 
 ### Setup