Fix #4661: Change shortcut for submitting uploads from Enter to Ctrl+…

…Enter

Also fix #4734.

app/javascript/src/javascripts/uploads.js.erb

@@ -12,10 +12,6 @@ Upload.IQDB_MIN_SIMILARITY = 50;
 Upload.IQDB_HIGH_SIMILARITY = 70;
 
 Upload.initialize_all = function() {
-  if ($("#c-uploads,#c-posts").length) {
-    Utility.keydown("return", "submit", Upload.submit_form, "#upload_tag_string, #post_tag_string");
-  }
-
   if ($("#c-uploads").length) {
     this.initialize_image();
     this.initialize_similar();
@@ -40,13 +36,6 @@ Upload.initialize_all = function() {
   }
 }
 
-Upload.submit_form = async function(event) {
-  event.preventDefault();
-  Utility.notice("The Enter shortcut will be removed soon. Use Ctrl+Enter instead");
-  await Utility.delay(3000);
-  Shortcuts.submit_form(event);
-}
-
 Upload.initialize_submit = function() {
   $("#form").on("submit.danbooru", Upload.validate_upload);
 }