Remove the OME gate

[pwalczysko]

Gate has been intentionally shut down today.

1. Removing the mentions of OME gate from

• https://github.com/ome/upptime/blob/master/.upptimerc.yml
• README
• summary json

2. Also removing two .yml files history/OME-gate-22.yml and history/OME-gate-443.yml

cc @jburel

[pwalczysko]

@jburel any objections to merging this ? (I do not have the perms) The cleaning up of the two dangling open issues would be welcome.

[jburel]

@pwalczysko it cannot be merged due to conflicts

[pwalczysko]

@pwalczysko it cannot be merged due to conflicts

Conflicts fixed now, ta.

[pwalczysko]

@pwalczysko it cannot be merged due to conflicts

Conflicts fixed now, ta.

The conflicts are back. I believe they are coming automatically, as the main branch is changing under the feet of this PR quite quickly.
If we do not merge just after I fix the conflict, then we will be in vicious circle for a long time.