Composer 1.x and 2.x
Running the following command will remove the package from vendor (or wherever you install packages), composer.json and composer.lock. Change vendor/package appropriately.
composer remove vendor/package
Obviously you’ll need to remove references to that package within your app.
I’m currently running the following version of Composer:
Composer version 1.0-dev (7b13507dd4d3b93578af7d83fbf8be0ca686f4b5) 2014-12-11 21:52:29
Documentation
https://getcomposer.org/doc/03-cli.md#remove
Updates
- 26/10/2020 – Updated answer to assert command works for v1.x and v2.x of Composer