Revert "Fix resource leaks in drm hal"

This caused b/38343526 which is a chase list issue, reverting for now.

This reverts commit 4e1fe736af1b88485bba762b11bc0c11a447819c.

Change-Id: Ib9ffcd11e575e3f05f54cbea17fda2f2eb3780b5
diff --git a/drm/1.0/default/CryptoPlugin.h b/drm/1.0/default/CryptoPlugin.h
index 5da469c..11cc2aa 100644
--- a/drm/1.0/default/CryptoPlugin.h
+++ b/drm/1.0/default/CryptoPlugin.h
@@ -44,7 +44,7 @@
 struct CryptoPlugin : public ICryptoPlugin {
     CryptoPlugin(android::CryptoPlugin *plugin) : mLegacyPlugin(plugin) {}
 
-    virtual ~CryptoPlugin() {delete mLegacyPlugin;}
+    ~CryptoPlugin() {delete mLegacyPlugin;}
 
     // Methods from ::android::hardware::drm::V1_0::ICryptoPlugin
     // follow.