Merge branch 'remove_kernel_ld' into 'master'

Remove kernel_ld.sh

See merge request redox-os/cookbook!296

recipes/kernel/kernel_ld.sh

-#!/usr/bin/env bash
-
-set -ex
-
-LD="$1"
-shift
-
-if "${LD}" -z use-gs-for-tls 2>&1 |
-grep "warning: -z use-gs-for-tls ignored" &> /dev/null
-then
-	echo "Please update your prefix:" >&2
-	echo "  rm -rf prefix" >&2
-	echo "  make prefix" >&2
-	exit 1
-fi
-
-exec "${LD}" -z use-gs-for-tls "$@"

recipes/kernel/recipe.toml

@@ -17,7 +17,7 @@ cargo rustc \
 	-C debuginfo=2 \
 	-C lto \
 	--emit link="${PWD}/libkernel.a"
-"${COOKBOOK_RECIPE}/kernel_ld.sh" "${TARGET}-ld" \
+"${TARGET}-ld" \
 	--gc-sections \
 	-z max-page-size=0x1000 \
 	-T "${COOKBOOK_SOURCE}/linkers/${ARCH}.ld" \