Fix Nova issue by removing getAlpha

Fix the NullPointerException issue when lauching the Nova 7 lanucher by
removing the getAlpha check in the getSizePercentage method. It
shouldn't alter the existing behavior.

Bug: 310788013
Test: atest ViewTest
Change-Id: I23fc2747434a96658b809f4091699f601326712b
1 file changed