Disable running of sel_ldr arm tests on mac

ports/fftw-float/build.sh

 # Copyright 2015 The Native Client Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 EXECUTABLES="tools/fftwf-wisdom${NACL_EXEEXT} tests/bench${NACL_EXEEXT}"
 
 EXTRA_CONFIGURE_ARGS="--enable-float"
 
 if [ "${NACL_ARCH}" = "arm" ]; then
   NACLPORTS_CPPFLAGS+=" -fomit-frame-pointer -fstrict-aliasing \
@@ skipping 14 matching lines @@
 
   LogExecute ${SRC_DIR}/configure \
     --host=nacl \
     --prefix=${PREFIX} \
     --enable-threads \
     ${EXTRA_CONFIGURE_ARGS:-}
 }
 
 TestStep() {
   LogExecute make check EXEEXT=
-
-  if [ ${NACL_ARCH} = "pnacl" ]; then
-    for arch in x86-32 arm; do
-      for exe in ${EXECUTABLES}; do
-        local exe_noext=${exe%.*}
-        WriteLauncherScript ${exe_noext} $(basename ${exe_noext}.${arch}.nexe)
-      done
-      LogExecute make check EXEEXT=
-    done
-  fi
 }