JS: Remove invalid syntax from test

TS decorators may not appear on functions and enums

Author: asgerf

javascript/ql/test/query-tests/Declarations/UnusedVariable/UnusedVariable.expected

@@ -1,7 +1,5 @@
 #select
 | Babelrc/importPragma.jsx:2:1:2:27 | import  ... react'; | Unused import q. |
-| decorated.ts:1:1:1:126 | import  ... where'; | Unused import actionHandler. |
-| decorated.ts:4:10:4:12 | fun | Unused function fun. |
 | eval.js:10:9:10:24 | not_used_by_eval | Unused variable not_used_by_eval. |
 | eval.js:19:9:19:24 | not_used_by_eval | Unused variable not_used_by_eval. |
 | externs.js:5:5:5:13 | iAmUnused | Unused variable iAmUnused. |

javascript/ql/test/query-tests/Declarations/UnusedVariable/decorated.ts

@@ -1,13 +1,7 @@
-import {actionHandler, actionHandlerFactory, actionHandlerFactoryProvider, actionHandlerFactoryProviderKind} from 'somewhere'; // OK - imports used as decorators
-
-@actionHandler
-function fun() {} // OK - decorator might use the function
+import { actionHandlerFactory, actionHandlerFactoryProvider } from 'somewhere'; // OK - imports used as decorators
 
 @actionHandlerFactory
-class Class {}  // OK - decorator might use the class
+class Class { }  // OK - decorator might use the class
 
 @actionHandlerFactoryProvider
-export class ExportedClass {} // OK - decorator might use the class
-
-@actionHandlerFactoryProviderKind
-enum Enum { plain } // OK - decorator might use the enum
+export class ExportedClass { } // OK - decorator might use the class