server: change http method_not_allowed message (#1452)

Co-authored-by: Niklas Adolfsson <[email protected]>

server/src/transport/http.rs

@@ -136,7 +136,7 @@ pub mod response {
 	pub fn method_not_allowed() -> HttpResponse {
 		from_template(
 			hyper::StatusCode::METHOD_NOT_ALLOWED,
-			"Used HTTP Method is not allowed. POST or OPTIONS is required\n",
+			"Used HTTP Method is not allowed. POST is required\n",
 			TEXT,
 		)
 	}