Remove extra pruneImport
diff --git a/build/build.go b/build/build.go
index def9cd3..62b360c 100644
--- a/build/build.go
+++ b/build/build.go
@@ -174,7 +174,6 @@
 	overrides := make(map[string]overrideInfo)
 	for _, file := range overlayFiles {
 		augmentOverlayFile(file, overrides)
-		pruneImports(file)
 	}
 	delete(overrides, "init")