kbuild: remove unused dtc-version.sh script

This is U-Boot own code, and no longer used since commit 36dd5f1b
("dtc: Switch to building and using our own dtc unless provided").

Prior to that commit, U-Boot relied on an external dtc, so this script
was used to check the dtc version.

Now U-Boot bundles our own dtc in script/dtc/dtc like Linux kernel.

Users are still allowed to pass DTC= option from the command line,
but they are supposed to choose correct version of dtc in this case.
So, we do not check the dtc version any more.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>

scripts/Kbuild.include

@@ -148,7 +148,6 @@ cc-ifversion = $(shell [ $(cc-version) $(1) $(2) ] && echo $(3) || echo $(4))
 
 # added for U-Boot
 binutils-version = $(shell $(CONFIG_SHELL) $(srctree)/scripts/binutils-version.sh $(AS))
-dtc-version = $(shell $(CONFIG_SHELL) $(srctree)/scripts/dtc-version.sh $(DTC))
 
 # cc-ldoption
 # Usage: ldflags += $(call cc-ldoption, -Wl$(comma)--hash-style=both)

scripts/dtc-version.sh

-#!/bin/sh
-#
-# dtc-version dtc-command
-#
-# Prints the dtc version of `dtc-command' in a canonical 6-digit form
-# such as `010404'  for dtc 1.4.4
-#
-
-dtc="$*"
-
-if [ ${#dtc} -eq 0 ]; then
-	echo "Error: No dtc command specified."
-	printf "Usage:\n\t$0 <dtc-command>\n"
-	exit 1
-fi
-
-MAJOR=$($dtc -v | head -1 | awk '{print $NF}' | cut -d . -f 1)
-MINOR=$($dtc -v | head -1 | awk '{print $NF}' | cut -d . -f 2)
-PATCH=$($dtc -v | head -1 | awk '{print $NF}' | cut -d . -f 3 | cut -d - -f 1)
-
-printf "%02d%02d%02d\\n" $MAJOR $MINOR $PATCH