Revert "hack for 0.5px line in IE10 for arrow skin"

This reverts commit c45ee33e978cde7fdbcc58fd6c31b95bdb093acc.
Revert "hack for 0.5px line in IE10 for arrow skin"

This reverts commit 0b7aebecfa3891433980aa9169ddf2277b9c80fa.