Plugin disable undate

I have a plugin that I have modified to add some classes and id for better style properties.

I don’t want it to check for updates, but I want all other plug-ins to check for updates.

So the Disable WordPress Core Update would not work for my purpose.

Still pretty much a noob with the PHP. I mainly needed to alter it to add some CSS style etc. . . But certainly no expert.

Anyone able to point me in the right direction?