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

LayoutTests/fast/js/date-toisostring-expected.txt

Index: LayoutTests/fast/js/date-toisostring-expected.txt
diff --git a/LayoutTests/fast/js/date-toisostring-expected.txt b/LayoutTests/fast/js/date-toisostring-expected.txt
deleted file mode 100644
index 6a03edc5cdc03003ad877f329c1c21d71f14f99c..0000000000000000000000000000000000000000
--- a/LayoutTests/fast/js/date-toisostring-expected.txt
+++ /dev/null
@@ -1,20 +0,0 @@
-Tests for Date.toISOString
-
-On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".
-
-
-PASS Date.toISOString.call({}) threw exception TypeError: Cannot call method 'call' of undefined.
-PASS Date.toISOString.call(0) threw exception TypeError: Cannot call method 'call' of undefined.
-PASS new Date(-400).toISOString() is '1969-12-31T23:59:59.600Z'
-PASS new Date(0).toISOString() is '1970-01-01T00:00:00.000Z'
-PASS new Date('1 January 1500 UTC').toISOString() is '1500-01-01T00:00:00.000Z'
-PASS new Date('1 January 2000 UTC').toISOString() is '2000-01-01T00:00:00.000Z'
-PASS new Date('1 January 4000 UTC').toISOString() is '4000-01-01T00:00:00.000Z'
-PASS new Date('1 January 100000 UTC').toISOString() is '+100000-01-01T00:00:00.000Z'
-FAIL new Date('1 January -1 UTC').toISOString() should be -000001-01-01T00:00:00.000Z. Threw exception RangeError: Invalid time value
-PASS new Date('10 March 2000 UTC').toISOString() is '2000-03-10T00:00:00.000Z'
-PASS throwsRangeError("new Date(NaN).toISOString()") is true
-PASS successfullyParsed is true
-
-TEST COMPLETE
-