package/gcc: remove leftover from legacy PowerPC patch
In commit 0c82f3f63563 (package/gcc: remove powerpc conditional patching
logic), the macro defining the conditional patch was removed, but it was
still referenced and expanded in the apply-patches hook.
Drop that now.
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
Cc: Romain Naour <romain.naour@gmail.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
(cherry picked from commit 84cdd92f0172ccc49fd2c037caaf3a659a26194d)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>