Remove target variable for e* #1561

Job	Run time
Collect tools	7s
Build container image (earthly)	1m 8s
Build container image (ekz)	33s
Build container image (emoj)	48s
Build container image (emojisum)	1m 36s
Build container image (envcli)	30s
Build container image (envsub)	49s
Build container image (etcd)	43s
Build container image (etcdadm)	21s
Build container image (exa)	32s
Build container images successfully	1s
Check visibility (earthly) / Check	4s
Check visibility (ekz) / Check	3s
Check visibility (emoj) / Check	7s
Check visibility (emojisum) / Check	7s
Check visibility (envcli) / Check	4s
Check visibility (envsub) / Check	4s
Check visibility (etcd) / Check	4s
Check visibility (etcdadm) / Check	4s
Check visibility (exa) / Check	6s
Collect versions for tools	11s
Scan container images (earthly:0.7.23) / Scout	22s
Scan container images (emoj:4.0.1) / Scout	19s
Scan container images (emojisum:2) / Scout	23s
Scan container images (ekz:0.8.0) / Scout	23s
Scan container images (envcli:0.7.1) / Scout	23s
Scan container images (envsub:0.1.3) / Scout	30s
Scan container images (etcd:3.5.11) / Scout	30s
Scan container images (etcdadm:0.1.5) / Scout	21s
Scan container images (exa:0.10.1) / Scout	30s
	11m 43s

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