Remove unnecessary uses of "takeScreenshot" (#349)

orx-jvm/orx-rabbit-control/src/demo/kotlin/DemoRabbitControlManualOverlay.kt

@@ -12,13 +12,6 @@ fun main() = application {
     }
 
     program {
-        // -- this block is for automation purposes only
-        if (System.getProperty("takeScreenshot") == "true") {
-            extend(SingleScreenshot()) {
-                this.outputFile = System.getProperty("screenshotPath")
-            }
-        }
-
         val rabbit = RabbitControlServer(showQRUntilClientConnects = false)
 
         val settings = object {