Revert "Frameworks/base: Fix a constructor"

The constructor was public API, doh. Gotta do this differently.

This reverts commit 33c5b2a62f.

Change-Id: Iadca87fe6a8866a8bd9d6f2a91578ec0d4c44691

core/java/android/os/RecoverySystem.java

@@ -513,5 +513,5 @@ public class RecoverySystem {
         return arg;
     }
 
-    private RecoverySystem() { }  // Do not instantiate
+    private void RecoverySystem() { }  // Do not instantiate
 }