dev-lang/mozart-stdlib: Tidyup, use cmake.eclass

Drop superfluous and post-inherit BUILD_DIR, CMAKE_USE_DIR

Package-Manager: Portage-3.0.18, Repoman-3.0.3
Signed-off-by: Andreas Sturmlechner <asturm@gentoo.org>

dev-lang/mozart-stdlib/mozart-stdlib-2.0.1.ebuild

@@ -1,11 +1,10 @@
-# Copyright 1999-2020 Gentoo Authors
+# Copyright 1999-2021 Gentoo Authors
 # Distributed under the terms of the GNU General Public License v2
 
 EAPI=7
 
-inherit cmake-utils
-
 MY_PN=mozart2-stdlib
+inherit cmake
 
 PATCHSET_VER="0"
 
@@ -23,14 +22,10 @@ RDEPEND=">=dev-lang/mozart-2.0.1"
 DEPEND="${RDEPEND}"
 
 S="${WORKDIR}/${MY_PN}"
-BUILD_DIR="${S}/build"
-CMAKE_USE_DIR="${S}"
 
 src_prepare() {
 	if [[ -d "${WORKDIR}"/${PV} ]] ; then
 		eapply "${WORKDIR}"/${PV}
 	fi
-	eapply_user
-
-	cmake-utils_src_prepare
+	cmake_src_prepare
 }