Harden configuration validation

internal/app/object_store_test.go

@@ -142,24 +142,3 @@ func commandObjectStoreTestConfig(secretsDir string) *config.Config {
 	}
 	return cfg
 }
-
-func restoreEnvAfterTest(t *testing.T, names ...string) {
-	t.Helper()
-	originals := make(map[string]string, len(names))
-	present := make(map[string]bool, len(names))
-	for _, name := range names {
-		value, ok := os.LookupEnv(name)
-		originals[name] = value
-		present[name] = ok
-		_ = os.Unsetenv(name)
-	}
-	t.Cleanup(func() {
-		for _, name := range names {
-			if present[name] {
-				_ = os.Setenv(name, originals[name])
-			} else {
-				_ = os.Unsetenv(name)
-			}
-		}
-	})
-}