Remove unused mouse click event

Since this isn't emitted anywhere, this can only lead to confusion for
library consumers. They'd need to implement their own click detection
with the button up and button down events.

src/event.rs

@@ -32,14 +32,6 @@ pub enum ScrollDelta {
     },
 }
 
-#[derive(Debug, Copy, Clone, PartialEq)]
-pub struct MouseClick {
-    pub button: MouseButton,
-    pub click_count: usize,
-    /// The logical coordinates of the mouse position
-    pub position: Point,
-}
-
 #[derive(Debug, Clone, Copy, PartialEq)]
 pub enum MouseEvent {
     /// The mouse cursor was moved
@@ -54,9 +46,6 @@ pub enum MouseEvent {
     /// A mouse button was released.
     ButtonReleased(MouseButton),
 
-    /// A mouse button was clicked.
-    Click(MouseClick),
-
     /// The mouse wheel was scrolled.
     WheelScrolled(ScrollDelta),