Fix wasm CI failure (#2024)

* Fix wasm ci

* remove cargo-web step

examples/control_flow.rs

@@ -99,7 +99,7 @@ fn main() {
                         if wait_cancelled {
                             *control_flow
                         } else {
-                            ControlFlow::WaitUntil(time::Instant::now() + WAIT_TIME)
+                            ControlFlow::WaitUntil(instant::Instant::now() + WAIT_TIME)
                         }
                     }
                     Mode::Poll => {

examples/request_redraw_threaded.rs

@@ -7,6 +7,7 @@ use winit::{
     window::WindowBuilder,
 };
 
+#[cfg(not(target_arch = "wasm32"))]
 fn main() {
     SimpleLogger::new().init().unwrap();
     let event_loop = EventLoop::new();
@@ -38,3 +39,8 @@ fn main() {
         }
     });
 }
+
+#[cfg(target_arch = "wasm32")]
+fn main() {
+    unimplemented!() // `Window` can't be sent between threads
+}