Generate sweepers for resources that have custom delete code

[c2thorn]

What kind of contribution is this issue about?

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Details

Right now we have a fairly heavy handed check for detecting any custom deletion code: https://github.com/GoogleCloudPlatform/magic-modules/blob/main/mmv1/api/resource.go#L2466

While discussing #22642, we determined it is likely that we are not generating sweepers when they easily could be in these cases. It may be worthwhile to remove the custom deletion check, generate the sweepers by default, and simply turn off the sweeper if they don't work.

References

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