#358 Update EncryptionMethod to new interface

- Add new methods to the EncryptionMethod interface
- Delete temporary interface (NewEncrMethod)
- Remove temporary checks and casts to NewEncrMethod

src/main/java/fr/xephi/authme/security/crypts/UnsaltedMethod.java

@@ -10,7 +10,7 @@ import fr.xephi.authme.security.crypts.description.Usage;
  */
 @Recommendation(Usage.DO_NOT_USE)
 @HasSalt(SaltType.NONE)
-public abstract class UnsaltedMethod implements NewEncrMethod {
+public abstract class UnsaltedMethod implements EncryptionMethod {
 
     public abstract String computeHash(String password);
 
@@ -24,12 +24,6 @@ public abstract class UnsaltedMethod implements NewEncrMethod {
         return computeHash(password);
     }
 
-    @Override
-    @Deprecated
-    public boolean comparePassword(String hash, String password, String playerName) {
-        return false;
-    }
-
     @Override
     public boolean comparePassword(String hash, String password, String salt, String name) {
         return hash.equals(computeHash(password));