Merge path.sh into script/trees

The code is simple enough now that I'm happy for it
to just be part of the main script.

Signed-off-by: Leah Rowe <leah@libreboot.org>

include/path.sh

@@ -1,43 +0,0 @@
-# SPDX-License-Identifier: MIT
-# Copyright (c) 2024 Leah Rowe <leah@libreboot.org>
-
-eval `setvars "" gccver gccfull gnatver gnatfull gccdir`
-
-# fix mismatching gcc/gnat versions on debian trixie/sid
-check_gnat_path()
-{
-	rm -f xbmkpath/* || $err "Cannot clear xbmkpath/"
-
-	eval `setvars "" gccver gccfull gnatver gnatfull gccdir`
-	gnu_setver gcc gcc || $err "Command 'gcc' unavailable."
-	gnu_setver gnat gnat || :
-
-	[ -z "$gccver" ] && $err "Cannot detect host GCC version"
-	[ "$gnatfull" = "$gccfull" ] && return 0
-
-	gccdir="$(dirname "$(command -v gcc)")"
-	for _gnatbin in "$gccdir/gnat-"*; do
-		[ -f "$_gnatbin" ] || continue
-		[ "${_gnatbin#"$gccdir/gnat-"}" = "$gccver" ] || continue
-		gnatver="${_gnatbin#"$gccdir/gnat-"}"; break
-	done
-	gnu_setver "gnat" "$gccdir/gnat-$gccver" || $err "Unknown gnat version"
-	[ "$gnatfull" = "$gccfull" ] || $err "GCC/GNAT versions do not match."
-
-	(
-	x_ cd xbmkpath
-	for _gnatbin in "$gccdir/gnat"*"-$gccver"; do
-		[ -e "$_gnatbin" ] || continue; _gnatutil="${_gnatbin##*/}"
-		x_ ln -s "$_gnatbin" "${_gnatutil%"-$gccver"}"
-	done
-	) || $err "Cannot create gnat-$gccver link in $gccdir"; :
-}
-
-gnu_setver()
-{
-	eval "$2 --version 1>/dev/null 2>/dev/null || return 1"
-	eval "${1}ver=\"`$2 --version 2>/dev/null | head -n1`\""
-	eval "${1}ver=\"\${${1}ver##* }\""
-	eval "${1}full=\"\${$1}ver\""
-	eval "${1}ver=\"\${${1}ver%%.*}\""; :
-}