Revert "rust: Only allow bindgen to produce `rlib`s."

This reverts commit 53a452d1ff172fba9060f2997fec006a70e44c8d.

Reason for revert: Broken build

Change-Id: I4c1c6f2166c3729ef1916ad7c21e32599c5e692f
diff --git a/rust/source_provider.go b/rust/source_provider.go
index 4f8d22b..7719611 100644
--- a/rust/source_provider.go
+++ b/rust/source_provider.go
@@ -65,12 +65,9 @@
 	}
 }
 
-func NewSourceProviderModule(hod android.HostOrDeviceSupported, sourceProvider SourceProvider, enableLints bool, rlibOnly bool) *Module {
+func NewSourceProviderModule(hod android.HostOrDeviceSupported, sourceProvider SourceProvider, enableLints bool) *Module {
 	_, library := NewRustLibrary(hod)
 	library.BuildOnlyRust()
-	if rlibOnly {
-		library.BuildOnlyRlib()
-	}
 	library.sourceProvider = sourceProvider
 
 	module := newModule(hod, android.MultilibBoth)