One of the last remaining big chunks of Bootstrap CSS is the grid system. Since PatternFly offers an equivalent, we should replace all Bootstrap grid instances with PatternFly and remove the Bootstrap grid CSS.

Searching the console codebase for Bootstrap grid references to replace: https://github.com/search?q=repo%3Aopenshift%2Fconsole+className%3D%22col-&type=code

Note we've extended PatternFly's sizing to include all the same sizing options as Bootstrap: https://github.com/openshift/console/blob/main/frontend/public/style/_patternfly-sizing-extension.scss

AC:

• Replace Bootstrap grid with PF6 equivalent.
• Update the changelog and notify plugin creators
• Remove bootstrap grip partial from
  • https://github.com/openshift/console/blob/main/frontend/public/style/ancillary/_bootstrap.scss
  • https://github.com/openshift/console/blob/main/frontend/public/style/ancillary/_bootstrap-grid.scss
• Check for unnecessary mixins