iOSSegmentedControl.RemoveByValue
From Xojo Documentation
Method
Removes a specific segment.
Sample Code
Removes a specific segment:
// MoonSegment is a property of iOSSegmentedControlItem that
// was previously added to the segmented control.
SegmentedControl1.RemoveByValue(MoonSegment)
// was previously added to the segmented control.
SegmentedControl1.RemoveByValue(MoonSegment)