x86-64, trampoline: Remove unused variable
x86-64, trampoline: Remove unused variable

Removed unused variable left over from development.

Reported-by: Brian Gerst <e60badcb99f652a0bcc15460d39f7ea12d6655ee@gmail.com>
LKML-Reference: <e707ae6032b6f6b135d5efd2ef2c940c7a49fa83@mail.gmail.com>
Cc: Stephen Rothwell <4bf0fb350827ce8d86875e76c923a478597c3cef@canb.auug.org.au>
Cc: Rafael J. Wysocki <a11f87183a953ab11f50fbafff689c5a7fa3506c@sisk.pl>
Cc: Matthieu Castet <2b6a54c52e56976a5646892b66a1a13421db0d2c@free.fr>

KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas