Re-enable LTO for libdl

The build breakage is now fixed by the current stable Clang, workaround
is no longer needed.

Test: presubmit
Bug: 169004486
Change-Id: Id8df8efeb9f4183921cbf75f1c51b1507bff1eb0
diff --git a/libdl/Android.bp b/libdl/Android.bp
index fde3dfc..762aeef 100644
--- a/libdl/Android.bp
+++ b/libdl/Android.bp
@@ -148,10 +148,6 @@
         "//apex_available:platform",
         "com.android.runtime",
     ],
-
-    lto: {
-        never: true,
-    },
 }
 
 cc_library {