[android] Remove the old RootFS builder script (#8782)

This commit removes `build_android_rootfs.sh` which has been replaced by
`build_android_ndk.sh`.

Signed-off-by: Hanjoung Lee <hanjoung.lee@samsung.com>

diff --git a/tools/cross/build_android_rootfs.sh b/tools/cross/build_android_rootfs.sh
deleted file mode 100755 (executable)
index 035e511..0000000
--- a/tools/cross/build_android_rootfs.sh
+++ /dev/null
@@ -1,114 +0,0 @@
-#!/usr/bin/env bash
-set -x
-
-# Different from other architectures, the result does not contain only RootFS.
-#   $__Rootfs/bin     : Toolchains
-#   $__Rootfs/sysroot : RootFS
-
-usage()
-{
-    echo "Usage: $0 [BuildArch] [NDKVersion] [APILevel] [ACL]"
-    echo "BuildArch  : arm or arm64"
-    echo "NDKVersion : r16b or higher (Must start with 'r')"
-    echo "APILevel   : 27 or higher"
-    echo "ACL        : acl (default), noacl (exclude ACL)"
-    exit 1
-}
-
-__CrossDir=$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )
-__BuildArch=arm64
-__NDKVersion=r16b
-__APILevel="27"
-__ACL=1
-__UnprocessedBuildArgs=
-
-for i in "$@" ; do
-    lowerI="$(echo $i | awk '{print tolower($0)}')"
-    case $lowerI in
-        -?|-h|--help)
-            usage
-            exit 1
-            ;;
-        arm)
-            __BuildArch=arm
-            ;;
-        arm64)
-            __BuildArch=arm64
-            ;;
-        r16b)
-            __NDKVersion=r16b
-            ;;
-        27)
-            __APILevel="27"
-            ;;
-        acl)
-            __ACL=1
-            ;;
-        noacl)
-            __ACL=0
-            ;;
-        *)
-            __UnprocessedBuildArgs="$__UnprocessedBuildArgs $i"
-            ;;
-    esac
-done
-
-__ToolchainDir=${TOOLCHAIN_DIR:-"${__CrossDir}/ndk/${__NDKVersion}"}
-__RootfsDir=${ROOTFS_DIR:-"${__CrossDir}/rootfs/${__BuildArch}.android"}
-
-NDK_DIR=android-ndk-${__NDKVersion}
-NDK_ZIP=${NDK_DIR}-linux-x86_64.zip
-
-if [[ -e $__RootfsDir ]]; then
-  echo "ERROR: $__RootfsDir already exists"
-  exit 255
-fi
-if [[ -e $__RootfsDir.gnustl ]]; then
-  echo "ERROR: $__RootfsDir.gnustl already exists"
-  exit 255
-fi
-
-echo "Downloading Android NDK"
-rm -rf "$__ToolchainDir"
-mkdir -p "$__ToolchainDir"
-wget -nv -nc https://dl.google.com/android/repository/$NDK_ZIP -O $__ToolchainDir/$NDK_ZIP
-
-echo "Unzipping Android NDK"
-unzip -qq -o $__ToolchainDir/$NDK_ZIP -d $__ToolchainDir
-rm $__ToolchainDir/$NDK_ZIP
-mv  $__ToolchainDir/${NDK_DIR} "$__ToolchainDir/ndk"
-
-echo "Generating standalone toolchain and rootfs to $__RootfsDir"
-
-$__ToolchainDir/ndk/build/tools/make-standalone-toolchain.sh --arch=$__BuildArch --platform=android-$__APILevel --install-dir=$__RootfsDir
-
-# ACL build from source needs --stl=gnustl
-echo "Generating standalone toolchain and rootfs with to $__RootfsDir.gnustl"
-$__ToolchainDir/ndk/build/tools/make-standalone-toolchain.sh --arch=$__BuildArch --platform=android-$__APILevel --install-dir=$__RootfsDir.gnustl --stl=gnustl
-
-# Install boost
-
-# NOTE This only copies headers so header-only libraries will work
-echo "Installing boost library (HEADER-ONLY)"
-
-BOOST_VERSION=1_67_0
-BOOST_BASENAME=boost_$BOOST_VERSION
-wget -nv -nc https://dl.bintray.com/boostorg/release/1.67.0/source/$BOOST_BASENAME.tar.gz -O $__ToolchainDir/$BOOST_BASENAME.tar.gz
-
-tar xzf $__ToolchainDir/$BOOST_BASENAME.tar.gz -C $__ToolchainDir
-cp -rv $__ToolchainDir/$BOOST_BASENAME/boost $__RootfsDir/sysroot/usr/include
-
-if [[ "$__ACL" == 1 ]]; then
-    echo "Installing arm compute library"
-
-    ACL_VERSION=19.05
-    ACL_BASENAME=arm_compute-v$ACL_VERSION-bin-android
-    wget -nv -nc https://github.com/ARM-software/ComputeLibrary/releases/download/v$ACL_VERSION/$ACL_BASENAME.tar.gz -O $__ToolchainDir/$ACL_BASENAME.tar.gz
-
-    tar xzf $__ToolchainDir/$ACL_BASENAME.tar.gz -C $__ToolchainDir
-    cp -rv $__ToolchainDir/$ACL_BASENAME/arm_compute $__RootfsDir/sysroot/usr/include
-    cp -rv $__ToolchainDir/$ACL_BASENAME/include/* $__RootfsDir/sysroot/usr/include
-    cp -rv $__ToolchainDir/$ACL_BASENAME/support $__RootfsDir/sysroot/usr/include
-    cp -rv $__ToolchainDir/$ACL_BASENAME/util $__RootfsDir/sysroot/usr/include
-    cp -rv $__ToolchainDir/$ACL_BASENAME/lib/android-arm64-v8a-cl/* $__RootfsDir/sysroot/usr/lib # TODO hardcoded path "arm64-v8a"
-fi