disable graal and serenity for being unstable (#41)

Author: devsnek

src/engines/graaljs.js

@@ -85,9 +85,7 @@ class GraalJSInstaller extends Installer {
 GraalJSInstaller.config = {
   name: 'GraalJS',
   id: 'graaljs',
-  supported: [
-    'linux-x64', 'win32-x64', 'darwin-x64', 'linux-arm64', 'darwin-arm64',
-  ],
+  supported: [],
 };
 
 module.exports = GraalJSInstaller;

src/engines/libjs.js

@@ -77,9 +77,7 @@ class LibJSInstaller extends Installer {
 LibJSInstaller.config = {
   name: 'LibJS',
   id: 'libjs',
-  supported: [
-    'linux-x64',
-  ],
+  supported: [],
 };
 
 module.exports = LibJSInstaller;