IDPA specifically disallows the disabling of safety mechanisms, so while it could happen, it would be because an individual has decided to ignore the rules and made the conscious choice to violate those same rules.
8.1.8 Non-IDPA-Legal Features and Modifications for All Divisions
The following features and modifications are not allowed in any division unless otherwise specifically allowed in the rulebook.
A. Compensators of any type including hybrid or ported barrels.
B. Add-on weights. This includes (but is not limited to) weighted magazines, tungsten guide rods, brass magazine
wells, weighted grips, and weighted grip plugs.
C. Heavy and/or cone style barrels without a barrel bushing except as allowed in ESP, CCP, BUG and CDP divisions
with length restrictions.
D. Sights of non-standard configuration (ghost rings, Bo-Mar ribs, etc.).
E. Disconnecting or disabling of any safety device including (but not limited to): manual safeties, grip safeties, firing
pin, striker, and hammer blocking safeties, 1911 series 80 firing pin safeties, 1911 Swartz safeties. 1911 series 80 frames may be used with series 70 slides or vice versa. Revolver actions may not be modified so that the hammer can fall when the cylinder is open.
F. Lights mounted on firearms.
G. Rail mounted lasers and bolt-on trigger guard mounted lasers are not allowed.