Reset bundle config build for current user?

I attempted to fix an issue with bundle install and the mysql2 gem by executing the command bundle config build.mysql2 --use-system-libraries. However, this command did not solve my issue. How can I undo it? bundle config displays the following:

Set for your local app (/Users/{user}/workspace/{appname}/.bundle/config): "--with-ldflags=-L/usr/local/opt/openssl/lib --with-cppflags=-I/usr/local/opt/openssl/include"
Set for the current user (/Users/{user}/.bundle/config): "--use-system-libraries"

Can someone help me revert this command?

To revert the command bundle config build.mysql2 --use-system-libraries, you can use the following command:

bundle config --delete build.mysql2

This will remove the build.mysql2 setting from both your local app and current user bundle configurations.