Remove misleading test case for findEndPosition
The test was written when `findEndPosition` did linear search.  Now that
`findEndPosition` does bisecting, the test case no longer applies. In
fact, it's enough to add 2 more '0' at the end of test input and the
test would fail.
@@ -601,7 +601,6 @@ public class TestWindowOperator
assertFindEndPosition("0001", 3);
assertFindEndPosition("0000000001", 9);
- assertFindEndPosition("00100", 2);
assertFindEndPosition("000111", 3);
assertFindEndPosition("0001111", 3);
assertFindEndPosition("0000111", 4);
