[INTERNAL] sap.m.Column: Old Android 2.3 workaround is removed.

- It is not necessary to check border-box support for table cells since
Android 2.3 is not supported anymore.

Change-Id: Ib6b0e403a1baa0df9439ae1a421a6bf3e8ecb63e
Merge "[INTERNAL] sap.m.Column: Old Android 2.3 workaround is removed."