Disable an old Mozilla date test

This old test does not appear to correctly calculate the date when we're
near a DTC transition. Prefer the tests in test262 for this.

Author: gbrail

tests/src/test/resources/compiled.tests

@@ -303,7 +303,6 @@ ecma/Date/15.9.5.13-5.js
 ecma/Date/15.9.5.13-6.js
 ecma/Date/15.9.5.13-7.js
 ecma/Date/15.9.5.13-8.js
-ecma/Date/15.9.5.14.js
 ecma/Date/15.9.5.15.js
 ecma/Date/15.9.5.16.js
 ecma/Date/15.9.5.17.js

tests/src/test/resources/interpreted.tests

@@ -299,7 +299,6 @@ ecma/Date/15.9.5.13-5.js
 ecma/Date/15.9.5.13-6.js
 ecma/Date/15.9.5.13-7.js
 ecma/Date/15.9.5.13-8.js
-ecma/Date/15.9.5.14.js
 ecma/Date/15.9.5.15.js
 ecma/Date/15.9.5.16.js
 ecma/Date/15.9.5.17.js