patches/eglibc: remove 100-powerpc-private_futex.patch from trunk

100-powerpc-private_futex.patch no longer applies to eglibc trunk.
This patch was submitted upstream in trunk.

Signed-off-by: Bryan Hundven <bryanhundven@gmail.com>

 # Compute Alpha-specific values

 CT_DoArchTupleValues () {

     # The architecture part of the tuple:

     CT_TARGET_ARCH="${CT_ARCH}${CT_ARCH_ALPHA_VARIANT}"

 }