Created by: rohit2sharma95
Drop the support of show property from the modal plugin.
When creating the new modal instance in v5, the show property does not work anymore, so instead of fixing the behavior just removing it permanently to keep the consistency between all the plugins. (All other plugins require the show() method to be called on the instances to be shown)
Ref: https://github.com/twbs/bootstrap/issues/31452#issuecomment-734392044 Closes: #31452 (closed)