Update tests to verify lexical grammar of private names

No whitespace allowed between the sigil and the identifier name

src/class-methods/class-private-setter-static-whitespace-syntax-error.case

-// Copyright (C) 2018 Bloomberg LP. All rights reserved.
-// This code is governed by the BSD license found in the LICENSE file.
- /*---
-desc: Syntax error if whitespace after '#' sigil
-template: syntax
-features: [class-methods-private]
-negative:
-  phase: parse
-  type: SyntaxError
----*/
-//- setup
-throw "Test262: This statement should not be evaluated.";
-
- //- methods
-static set # m() {}

src/class-methods/class-private-setter-whitespace-syntax-error.case

-// Copyright (C) 2018 Bloomberg LP. All rights reserved.
-// This code is governed by the BSD license found in the LICENSE file.
- /*---
-desc: Syntax error if whitespace after '#' sigil
-template: syntax
-features: [class-methods-private]
-negative:
-  phase: parse
-  type: SyntaxError
----*/
-//- setup
-throw "Test262: This statement should not be evaluated.";
-
- //- methods
-set # m() {}