Automation: fix IndexOutOfBoundsException

automation/src/main/java/info/nightscout/androidaps/plugins/general/automation/AutomationPlugin.kt

@@ -292,9 +292,11 @@ class AutomationPlugin @Inject constructor(
 
     @Synchronized
     fun removeAt(index: Int) {
+        if (index >= 0 && index < automationEvents.size) {
             automationEvents.removeAt(index)
             rxBus.send(EventAutomationDataChanged())
         }
+    }
 
     @Synchronized
     fun at(index: Int) = automationEvents[index]