treewide: clean up test static binary targets

This removes some intermediate targets only used for transitions by
consolidating them into a single one.

Change-Id: I46dcbcb731038edd2b67259de1811018f5ba43da
Reviewed-on: https://review.monogon.dev/c/monogon/+/3753
Reviewed-by: Leopold Schabel <leo@monogon.tech>
Tested-by: Jenkins CI
Vouch-Run-CI: Tim Windelschmidt <tim@monogon.tech>
diff --git a/cloud/agent/takeover/e2e/main_test.go b/cloud/agent/takeover/e2e/main_test.go
index 0521cc9..b141e63 100644
--- a/cloud/agent/takeover/e2e/main_test.go
+++ b/cloud/agent/takeover/e2e/main_test.go
@@ -174,6 +174,7 @@
 		t.Fatal(err)
 	}
 	defer takeoverSrcFile.Close()
+
 	if _, err := io.Copy(takeoverFile, takeoverSrcFile); err != nil {
 		t.Fatal(err)
 	}