Buildsystem: default bootloader is not my custom one

You can set BANAN_BOOTLOADER=GRUB to use grub instead. Image creation
does not convert disk image now automatically between bootloaders and
calling ./bos image-full is now required.

bootloader/install.sh

@@ -1,37 +0,0 @@
-#!/bin/sh
-
-set -e
-
-if [[ -z $BANAN_DISK_IMAGE_PATH ]]; then
-	echo "You must set the BANAN_DISK_IMAGE_PATH environment variable" >&2
-	exit 1
-fi
-
-if [[ -z $BANAN_BUILD_DIR ]]; then
-	echo "You must set the BANAN_BUILD_DIR environment variable" >&2
-	exit 1
-fi
-
-ROOT_PARTITION_INDEX=2
-ROOT_PARTITION_INFO=$(fdisk -x $BANAN_DISK_IMAGE_PATH | grep "^$BANAN_DISK_IMAGE_PATH" | head -$ROOT_PARTITION_INDEX | tail -1)
-ROOT_PARTITION_GUID=$(echo $ROOT_PARTITION_INFO | cut -d' ' -f6)
-
-INSTALLER_BUILD_DIR=$(dirname $(realpath $0))/installer/build
-BOOTLOADER_ELF=$BANAN_BUILD_DIR/bootloader/bootloader
-
-if ! [ -f $BOOTLOADER_ELF ]; then
-	echo "You must build the bootloader first" >&2
-	exit 1
-fi
-
-if ! [ -d $INSTALLER_BUILD_DIR ]; then
-	mkdir -p $INSTALLER_BUILD_DIR
-	cd $INSTALLER_BUILD_DIR
-	cmake ..
-fi
-
-cd $INSTALLER_BUILD_DIR
-make
-
-echo installing bootloader
-$INSTALLER_BUILD_DIR/x86_64-banan_os-bootloader-installer $BOOTLOADER_ELF $BANAN_DISK_IMAGE_PATH $ROOT_PARTITION_GUID