Remove no-longer-valid tests

test/language/line-terminators/S7.3_A2.3.js

-// Copyright 2009 the Sputnik authors.  All rights reserved.
-// This code is governed by the BSD license found in the LICENSE file.
-
-/*---
-info: LINE SEPARATOR (U+2028) within strings is not allowed
-es5id: 7.3_A2.3
-description: Insert LINE SEPARATOR (\u2028) into string
----*/
-
-assert.throws(SyntaxError, function() {
-  eval("'\u2028str\u2028ing\u2028'");
-});

test/language/line-terminators/S7.3_A2.4.js

-// Copyright 2009 the Sputnik authors.  All rights reserved.
-// This code is governed by the BSD license found in the LICENSE file.
-
-/*---
-info: PARAGRAPH SEPARATOR (U+2029) within strings is not allowed
-es5id: 7.3_A2.4
-description: Insert PARAGRAPH SEPARATOR (\u2029) into string
----*/
-
-// CHECK#1
-assert.throws(SyntaxError, function() {
-  eval("'\u2029str\u2029ing\u2029'");
-});