app-containers/podman-compose: Add proper dep to podman, drop ~x86

The ARCH keyword for ~x86 was actually wrongly set as podman itself has no
keywords for it and podman-compose w/o podman doesn't make much sense.

Package-Manager: Portage-3.0.30, Repoman-3.0.3
Signed-off-by: Nils Freydank <holgersson@posteo.de>

app-containers/podman-compose/podman-compose-0.1.8_p20211218-r2.ebuild

@@ -23,16 +23,14 @@ else
 		S="${WORKDIR}/qTox-${PV}"
 	fi
 fi
-KEYWORDS="~amd64 ~x86"
+KEYWORDS="~amd64"
 
 LICENSE="GPL-2"
 SLOT="0"
 IUSE="test"
 RESTRICT="!test? ( test )"
 
-DEPEND=""
 RDEPEND="
-	${DEPEND}
+	app-containers/podman
 	dev-python/pyyaml[${PYTHON_USEDEP}]
 "
-BDEPEND=""