terminal: remove invalidate method

The terminal widget has two invalidation methods, one exported and one
private. The private one does nothing special.

Remove the private method and only use the exported method.

Signed-off-by: Tim Culverhouse <tim@timculverhouse.com>
Acked-by: Robin Jarry <robin@jarry.cc>

widgets/terminal.go

@@ -86,10 +86,6 @@ func (term *Terminal) Destroy() {
 }
 
 func (term *Terminal) Invalidate() {
-	term.invalidate()
-}
-
-func (term *Terminal) invalidate() {
 	term.DoInvalidate(term)
 }
 
@@ -166,7 +162,7 @@ func (term *Terminal) Focus(focus bool) {
 			_, x, y, style := term.vterm.GetCursor()
 			term.ctx.SetCursor(x, y)
 			term.ctx.SetCursorStyle(style)
-			term.invalidate()
+			term.Invalidate()
 		}
 	}
 }