remove default paramerter and added whitespace before }

src/mol-script/script.ts

@@ -17,7 +17,7 @@ export { Script };
 
 interface Script { expression: string, language: Script.Language }
 
-function Script(expression: string = '(sel.atom.all)', language: Script.Language = 'mol-script'): Script {
+function Script(expression: string, language: Script.Language): Script {
     return { expression, language };
 }