archivers/lz4: Remove cross-compilation patch; make different target.

The `all' target apparently includes things that aren't necessary for
the build products we expect.  Just use an empty target so that make
selects the first one in the makefile, which according to
https://github.com/lz4/lz4/issues/1240 is the reasonable choice here.

No change to the build products that are installed -- this just makes
lz4 build fewer things.

archivers/lz4/Makefile

@@ -1,4 +1,4 @@
-# $NetBSD: Makefile,v 1.26 2023/06/14 11:07:42 riastradh Exp $
+# $NetBSD: Makefile,v 1.27 2023/06/15 10:03:34 riastradh Exp $
 
 DISTNAME=	lz4-1.9.4
 CATEGORIES=	archivers
@@ -13,15 +13,10 @@ LICENSE=	2-clause-bsd
 USE_LANGUAGES=		c99 c++
 USE_TOOLS+=		gmake
 PKGCONFIG_OVERRIDE+=	lib/liblz4.pc.in
+BUILD_TARGET=		# empty
 TEST_TARGET=		test
 
 # Needed for nanosleep() on Solaris 10, PR pkg/56226
 LDFLAGS.SunOS+=		-lrt
 
-.include "../../mk/bsd.prefs.mk"
-
-.if ${USE_CROSS_COMPILE:U:tl} == "yes"
-MAKE_FLAGS+=		CXX_FOR_BUILD=${NATIVE_CXX:Q}
-.endif
-
 .include "../../mk/bsd.pkg.mk"

archivers/lz4/distinfo

@@ -1,9 +1,8 @@
-$NetBSD: distinfo,v 1.24 2023/06/14 11:07:42 riastradh Exp $
+$NetBSD: distinfo,v 1.25 2023/06/15 10:03:34 riastradh Exp $
 
 BLAKE2s (lz4-1.9.4.tar.gz) = 47eac8d4a549b2ab125e6b44d9c0acd1ed2c4d0e86054ecacc5f9704a0d4c208
 SHA512 (lz4-1.9.4.tar.gz) = 043a9acb2417624019d73db140d83b80f1d7c43a6fd5be839193d68df8fd0b3f610d7ed4d628c2a9184f7cde9a0fd1ba9d075d8251298e3eb4b3a77f52736684
 Size (lz4-1.9.4.tar.gz) = 354063 bytes
 SHA1 (patch-Makefile.inc) = 7f27fb9d4cde9c14623c8fce167990bec0332161
-SHA1 (patch-contrib_gen__manual_Makefile) = c29514de7920f484e4b00b8fd79ce4d8d2e80428
 SHA1 (patch-lib_Makefile) = 64441f91217cf5832f122ed32a31007b4a8dc5f4
 SHA1 (patch-programs_Makefile) = bf3a8b296bfac8407c3e233c41fa037ba989876c

archivers/lz4/patches/patch-contrib_gen__manual_Makefile

@@ -1,17 +0,0 @@
-$NetBSD: patch-contrib_gen__manual_Makefile,v 1.1 2023/06/14 11:07:42 riastradh Exp $
-
-Handle cross-compilation.
-
---- contrib/gen_manual/Makefile.orig	2022-08-15 22:45:31.000000000 +0000
-+++ contrib/gen_manual/Makefile
-@@ -56,8 +56,9 @@ endif
- .PHONY: default
- default: gen_manual
- 
-+CXX_FOR_BUILD = $(CXX)
- gen_manual: gen_manual.cpp
--	$(CXX) $(FLAGS) $^ -o $@$(EXT)
-+	$(CXX_FOR_BUILD) $(FLAGS) $^ -o $@$(EXT)
- 
- $(LZ4MANUAL) : gen_manual $(LZ4API)
- 	echo "Update lz4 manual in /doc"