[PATCH v2 3/3] kbuild: remove duplicated xz compressions target

[Jules Maselbas <jmaselbas@zdiv.net>]

Both cmd_xzkern and cmd_xzmisc where already defined in the same file

Signed-off-by: Jules Maselbas <jmaselbas@zdiv.net>
Reviewed-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
---
v2: no changes
---
 scripts/Makefile.lib | 28 ----------------------------
 1 file changed, 28 deletions(-)

diff --git a/scripts/Makefile.lib b/scripts/Makefile.lib
index f04c09f9e2..6baa618f15 100644
--- a/scripts/Makefile.lib
+++ b/scripts/Makefile.lib
@@ -470,34 +470,6 @@ cmd_lzo = (cat $(filter-out FORCE,$^) | \
 %.lzo: %
 	$(call if_changed,lzo)
 
-# XZ
-# ---------------------------------------------------------------------------
-# Use xzkern to compress the kernel image and xzmisc to compress other things.
-#
-# xzkern uses a big LZMA2 dictionary since it doesn't increase memory usage
-# of the kernel decompressor. A BCJ filter is used if it is available for
-# the target architecture. xzkern also appends uncompressed size of the data
-# using size_append. The .xz format has the size information available at
-# the end of the file too, but it's in more complex format and it's good to
-# avoid changing the part of the boot code that reads the uncompressed size.
-# Note that the bytes added by size_append will make the xz tool think that
-# the file is corrupt. This is expected.
-#
-# xzmisc doesn't use size_append, so it can be used to create normal .xz
-# files. xzmisc uses smaller LZMA2 dictionary than xzkern, because a very
-# big dictionary would increase the memory usage too much in the multi-call
-# decompression mode. A BCJ filter isn't used either.
-quiet_cmd_xzkern = XZKERN  $@
-cmd_xzkern = (cat $(filter-out FORCE,$^) | \
-	sh $(srctree)/scripts/xz_wrap.sh && \
-	$(call size_append, $(filter-out FORCE,$^))) > $@ || \
-	(rm -f $@ ; false)
-
-quiet_cmd_xzmisc = XZMISC  $@
-cmd_xzmisc = (cat $(filter-out FORCE,$^) | \
-	xz --check=crc32 --lzma2=dict=1MiB) > $@ || \
-	(rm -f $@ ; false)
-
 # lz4
 # ---------------------------------------------------------------------------
 
-- 
2.42.0