Remove generic parameter T from EventLoopWindowTarget (#3298)

src/platform_impl/ios/window.rs

@@ -398,8 +398,8 @@ pub struct Window {
 }
 
 impl Window {
-    pub(crate) fn new<T>(
-        event_loop: &EventLoopWindowTarget<T>,
+    pub(crate) fn new(
+        event_loop: &EventLoopWindowTarget,
         window_attributes: WindowAttributes,
         platform_attributes: PlatformSpecificWindowBuilderAttributes,
     ) -> Result<Window, RootOsError> {