sys-devel/llvm: Remove non-arm & non-Darwin keywords from 3.7.1

Closes: https://github.com/gentoo/gentoo/pull/7690

sys-devel/llvm/llvm-3.7.1-r3.ebuild

@@ -1,4 +1,4 @@
-# Copyright 1999-2017 Gentoo Foundation
+# Copyright 1999-2018 Gentoo Foundation
 # Distributed under the terms of the GNU General Public License v2
 
 EAPI=6
@@ -30,13 +30,12 @@ SRC_URI="https://llvm.org/releases/${PV}/${P}.src.tar.xz
 
 LICENSE="UoI-NCSA rc BSD public-domain
 	arm? ( LLVM-Grant )
-	arm64? ( LLVM-Grant )
 	multitarget? ( LLVM-Grant )"
 SLOT="0/${PV}"
-KEYWORDS="amd64 arm ~arm64 x86 ~amd64-fbsd ~x86-fbsd ~amd64-linux ~arm-linux ~x86-linux ~ppc-macos ~x64-macos ~x86-macos"
+KEYWORDS="arm ~ppc-macos ~x64-macos ~x86-macos"
 IUSE="clang debug doc gold libedit +libffi lldb multitarget ncurses ocaml
 	python +static-analyzer test xml video_cards_radeon
-	kernel_Darwin kernel_FreeBSD"
+	kernel_Darwin"
 
 COMMON_DEPEND="
 	sys-libs/zlib:0=
@@ -453,11 +452,6 @@ src_install() {
 	fi
 
 	multilib-minimal_src_install
-
-	# Remove unnecessary headers on FreeBSD, bug #417171
-	if use kernel_FreeBSD && use clang; then
-		rm "${ED}"usr/lib/clang/${PV}/include/{std,float,iso,limits,tgmath,varargs}*.h || die
-	fi
 }
 
 multilib_src_install() {
@@ -565,9 +559,3 @@ multilib_src_install_all() {
 		fi
 	fi
 }
-
-pkg_postinst() {
-	if use clang && ! has_version sys-libs/libomp; then
-		elog "To enable OpenMP support in clang, install sys-libs/libomp."
-	fi
-}