Remove old tests that have been migrated to the v8 repo.

LayoutTests/fast/js/script-tests/numeric-escapes-in-string-literals.js

-description(
-"Test numeric escapes in string literals - https://bugs.webkit.org/show_bug.cgi?id=51724"
-);
-
-function test(_stringLiteral, _nonStrictResult, _strictResult)
-{
-    stringLiteral = '"' + _stringLiteral + '"';
-    nonStrictResult = _nonStrictResult;
-    shouldBe("eval(stringLiteral)", "nonStrictResult");
-
-    stringLiteral = '"use strict"; ' + stringLiteral;
-    if (_strictResult) {
-        strictResult = _strictResult;
-        shouldBe("eval(stringLiteral)", "strictResult");
-    } else
-        shouldThrow("eval(stringLiteral)");
-}
-
-// Tests for single digit octal and decimal escapes.
-// In non-strict mode 0-7 are octal escapes, 8-9 are NonEscapeCharacters.
-// In strict mode only "\0" is permitted.
-test("\\0", "\x00", "\x00");
-test("\\1", "\x01");
-test("\\7", "\x07");
-test("\\8", "8");
-test("\\9", "9");
-
-// Tests for multi-digit octal values outside strict mode;
-// Octal literals may be 1-3 digits long.  In strict more all multi-digit sequences are illegal.
-test("\\00", "\x00");
-test("\\000", "\x00");
-test("\\0000", "\x000");
-
-test("\\01", "\x01");
-test("\\001", "\x01");
-test("\\0001", "\x001");
-
-test("\\10", "\x08");
-test("\\100", "\x40");
-test("\\1000", "\x400");
-
-test("\\19", "\x019");
-test("\\109", "\x089");
-test("\\1009", "\x409");
-
-test("\\99", "99");