fix(clusters): fix linode-gc query (#1063)

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## Changes

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svc/pkg/linode/standalone/gc/src/lib.rs

@@ -91,7 +91,6 @@ async fn run_for_linode_account(
 		"
 		UPDATE db_linode.server_images
 		SET complete_ts = $2
-		FROM db_linode.server_images
 		WHERE
 			image_id = ANY($1) AND
 			complete_ts IS NULL