vkcube and vkcubepp have unexpected different --help output

[lunarpapillo]

Identified on macOS, but likely the same on all platforms.

Very minor, but surprising. vkcube has a --validate-checks-disabled switch that vkcubepp doesn't have:

$ /Applications/vkcube.app/Contents/MacOS/vkcube --help
Usage:
  vkcube	[--use_staging] [--validate] [--validate-checks-disabled]
	[--break] [--c <framecount>] [--suppress_popups]
	[--incremental_present] [--display_timing]
	[--gpu_number <index of physical device>]
	[--present_mode <present mode enum>]
	[--width <width>] [--height <height>]
	[--force_errors]
	<present_mode_enum>
		VK_PRESENT_MODE_IMMEDIATE_KHR = 0
		VK_PRESENT_MODE_MAILBOX_KHR = 1
		VK_PRESENT_MODE_FIFO_KHR = 2
		VK_PRESENT_MODE_FIFO_RELAXED_KHR = 3
$ /Applications/vkcubepp.app/Contents/MacOS/vkcubepp --help
Usage:
  vkcubepp	[--use_staging] [--validate]
	[--break] [--c <framecount>] [--suppress_popups]
	[--gpu_number <index of physical device>]
	[--present_mode <present mode enum>]
	[--width <width>] [--height <height>]
	[--force_errors]
	<present_mode_enum>
		VK_PRESENT_MODE_IMMEDIATE_KHR = 0
		VK_PRESENT_MODE_MAILBOX_KHR = 1
		VK_PRESENT_MODE_FIFO_KHR = 2
		VK_PRESENT_MODE_FIFO_RELAXED_KHR = 3

I would expect the two to be identical in functionality and UI, differing only in development language.