[openpgp] Do not put the BouncyCastleProvider at first position

This causes

java.security.InvalidKeyException: cannot identify XDH private key

on Java 11 or higher.

See also
- https://github.com/bcgit/bc-java/issues/620
- https://github.com/bcgit/bc-java/issues/589
- https://github.com/corretto/corretto-11/issues/168
- https://bugs.openjdk.java.net/browse/JDK-8171279

smack-openpgp/src/main/java/org/jivesoftware/smackx/ox/util/OpenPgpInitializer.java

@@ -17,23 +17,15 @@
 package org.jivesoftware.smackx.ox.util;
 
 import org.jivesoftware.smack.initializer.UrlInitializer;
-import org.jivesoftware.smack.util.SecurityUtil;
-
-import org.bouncycastle.jce.provider.BouncyCastleProvider;
 
 /**
  * Initializer class which registers ExtensionElementProviders on startup.
  */
 public class OpenPgpInitializer extends UrlInitializer {
 
-    static {
-        // Remove any BC providers and add a fresh one.
-        // This is done, since older Android versions ship with a crippled BC provider.
-        SecurityUtil.ensureProviderAtFirstPosition(BouncyCastleProvider.class);
-    }
-
     @Override
     protected String getProvidersUri() {
         return "classpath:org.jivesoftware.smackx.ox/openpgp.providers";
     }
+
 }