dev-libs/lsbcrypt: Remove variables that are defined independently in the makefile

I am attempting to fix the following bugs.
https://bugs.gentoo.org/909726

Signed-off-by: Okamura Kazuya <gentoo-guru@danceylove.net>

dev-libs/lsbcrypt/files/lsbcrypt-fix-flags-directly.patch

@@ -0,0 +1,14 @@
+I am attempting to fix the following bugs.
+https://bugs.gentoo.org/909726
+diff --git a/Makefile b/Makefile
+index 03ebfa5..bed7d39 100644
+--- a/Makefile
++++ b/Makefile
+@@ -1,5 +1,5 @@
+-CC = gcc
+-CFLAGS = $(shell grep '^CFLAGS = ' crypt_blowfish/Makefile | cut -d= -f2-)
++#CC = gcc
++#CFLAGS = $(shell grep '^CFLAGS = ' crypt_blowfish/Makefile | cut -d= -f2-)
+ .PHONY: crypt_blowfish
+ 
+ all: bcrypt.a

dev-libs/lsbcrypt/lsbcrypt-1.0.0-r2.ebuild

@@ -0,0 +1,30 @@
+# Copyright 1999-2023 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+COMMIT="55ff64349dec3012cfbbb1c4f92d4dbd46920213"
+DESCRIPTION="libcrypt wrapper for LiteSpeedTech"
+HOMEPAGE="https://github.com/litespeedtech/libbcrypt/"
+SRC_URI="https://github.com/litespeedtech/libbcrypt/archive/${COMMIT}.tar.gz -> ${P}.gh.tar.gz"
+LICENSE="CC0-1.0 public-domain"
+SLOT="0"
+KEYWORDS="~amd64"
+
+S="${WORKDIR}/libbcrypt-${COMMIT}"
+
+PATCHES=(
+	"${FILESDIR}"/${PV}-fix-tests.patch
+	"${FILESDIR}"/${PV}-fix-flags-directly.patch
+)
+
+src_test() {
+	default
+	./bcrypt_test || die "Tests failed!"
+}
+
+src_install() {
+	newlib.a bcrypt.a libbcrypt.a
+	newheader bcrypt.h libbcrypt.h
+	einstalldocs
+}