remove audio cue and alert setting configurations

[meganrogge]

now that the migration has happened for a few iterations, we should remove these

vscode/src/vs/workbench/contrib/accessibility/browser/accessibilityConfiguration.ts

Lines 263 to 273 in 7b49653

	},
	[AccessibilityAlertSettingId.NoInlayHints]: {
	'markdownDescription': localize('announcement.noInlayHints', "Indicates when there are no inlay hints. Also see {0}.", '`#audioCues.noInlayHints#`'),
	...baseAlertProperty
	},
	[AccessibilityAlertSettingId.LineHasBreakpoint]: {
	'markdownDescription': localize('announcement.lineHasBreakpoint', "Indicates when on a line with a breakpoint. Also see {0}.", '`#audioCues.lineHasBreakpoint#`'),
	...baseAlertProperty
	},
	[AccessibilityAlertSettingId.NotebookCellCompleted]: {
	'markdownDescription': localize('announcement.notebookCellCompleted', "Indicates when a notebook cell completes successfully. Also see {0}.", '`#audioCues.notebookCellCompleted#`'),