Remove scripts/host-build-all.sh

scripts/host-build-all.sh has been replaced and deprecated for more
than a year.

Signed-off-by: Marc Herbert <marc.herbert@intel.com>

scripts/host-build-all.sh

@@ -1,31 +0,0 @@
-#!/bin/bash
-# SPDX-License-Identifier: BSD-3-Clause
-# Copyright(c) 2018 Intel Corporation. All rights reserved.
-
-# fail on any errors
-set -e
-
-deprecated()
-{
-    >&2 printf "\nWARNING: %s is deprecated, use newer rebuild-testbench.sh\n\n" \
-	"$0"
-}
-
-deprecated
-
-cd tools
-cd testbench
-
-rm -rf build_testbench
-
-mkdir build_testbench
-cd build_testbench
-
-cmake -DCMAKE_INSTALL_PREFIX=install \
-	-DCMAKE_VERBOSE_MAKEFILE=ON \
-	..
-
-make -j$(nproc --all)
-make install
-
-deprecated