Refactor LT tests for parsers: RegExp

The tests for the parsing of line terminators were expressed using eval.
This made the tests more complex than necessary and also prevented the
tests from providing value to ECMAScript parsers.

Remove the use of eval and instead express the expectations with literal
source text.

test/language/line-terminators/7.3-7.js → test/language/line-terminators/invalid-regexp-ls.js

@@ -2,13 +2,16 @@
 // This code is governed by the BSD license found in the LICENSE file.
 
 /*---
+esid: sec-line-terminators
 es5id: 7.3-7
 description: >
     7.3 - ES5 recognizes the character <LS> (\u2028) as terminating
     regular expression literals
+negative:
+  phase: parse
+  type: SyntaxError
 ---*/
 
-
-assert.throws(SyntaxError, function() {
-            eval("var regExp =  /[\u2028]/");
-});
+$DONOTEVALUATE();
+
+/
/

test/language/line-terminators/7.3-8.js → test/language/line-terminators/invalid-regexp-ps.js

@@ -2,13 +2,16 @@
 // This code is governed by the BSD license found in the LICENSE file.
 
 /*---
+esid: sec-line-terminators
 es5id: 7.3-8
 description: >
     7.3 - ES5 recognizes the character <PS> (\u2029) as terminating
     regular expression literals
+negative:
+  phase: parse
+  type: SyntaxError
 ---*/
 
-
-assert.throws(SyntaxError, function() {
-            eval("var regExp =  /[\u2029]/");
-});
+$DONOTEVALUATE();
+
+/
/