strapi/packages/strapi-plugin-users-permissions/config/layout.js

module.exports = {
  user: {
    username: {
      className: 'col-md-6'
    },
    email: {
      className: 'col-md-6'
    },
    username: {
      className: 'col-md-6'
    },
    provider: {
      className: 'd-none'
    },
    resetPasswordToken: {
      className: 'd-none'
    },
    role: {
      className: 'd-none'
    }
  }
};