hg: jdk9/hs/hotspot: 8169529: AArch64: Revert old JDK-8167595 changes after JDK-8159035 fix is pushed

[rahul.v.raghavan at oracle.com]

Changeset: a857e274f6df
Author:    rraghavan
Date:      2016-11-18 03:40 -0800
URL:       http://hg.openjdk.java.net/jdk9/hs/hotspot/rev/a857e274f6df

8169529: AArch64: Revert old JDK-8167595 changes after JDK-8159035 fix is pushed
Summary: Removed the zero check
Reviewed-by: adinn, aph, thartmann

! src/cpu/aarch64/vm/stubGenerator_aarch64.cpp