Added missing signature

Author: ypujante

src/lib/libsigs.js

@@ -731,6 +731,7 @@ sigs = {
   emscripten_promise_resolve__sig: 'vpip',
   emscripten_promise_then__sig: 'ppppp',
   emscripten_random__sig: 'f',
+  emscripten_remove_callback__sig: 'ippip',
   emscripten_request_animation_frame__sig: 'ipp',
   emscripten_request_animation_frame_loop__sig: 'vpp',
   emscripten_request_fullscreen__sig: 'ipi',

test/test_html5_remove_callback.c

@@ -85,6 +85,7 @@ int main() {
   // adding another keypress callback on the same target
   ret = emscripten_set_keypress_callback(EMSCRIPTEN_EVENT_TARGET_WINDOW, NULL, useCapture, key_callback_2);
   ASSERT_RESULT(emscripten_set_keypress_callback);
+
   checkCount(3);
 
   // adding another keypress callback on the same target with different user data
@@ -131,8 +132,5 @@ int main() {
 
   checkCount(2);
 
-  emscripten_async_call(test_done, 0, 5000);
-
-
   return 0;
 }