backend/drm: Remove call to CRTC realloc on scan
After a connector scan, new connectors might have appeared and old ones gone away. At this point, old CRTC allocations are already gone, while new allocations are not yet needed. Skip the call.
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After a connector scan, new connectors might have appeared and old ones gone away. At this point, old CRTC allocations are already gone, while new allocations are not yet needed. Skip the call.