bash-completion: resolve conflict with pacman

srcpkgs/bash-completion/template

@@ -1,7 +1,7 @@
 # Template file for 'bash-completion'
 pkgname=bash-completion
 version=2.11
-revision=3
+revision=4
 build_style=gnu-configure
 make_install_args="profiledir=/etc/bash/bashrc.d"
 depends="bash"
@@ -60,3 +60,8 @@ pre_check() {
 	done
 	export PYTEST_ADDOPTS
 }
+
+post_install() {
+	# for slackware's that we don't have, conflicts with pacman's
+	rm ${DESTDIR}/usr/share/bash-completion/completions/makepkg
+}