update comments

core/java/src/net/i2p/crypto/eddsa/EdDSAPrivateKey.java

@@ -87,7 +87,6 @@ public class EdDSAPrivateKey implements EdDSAKey, PrivateKey {
      *  @since implemented in 0.9.25
      */
     public byte[] getEncoded() {
-        // TODO no equals() implemented in spec, but it's essentially a singleton
         if (!edDsaSpec.equals(EdDSANamedCurveTable.getByName(EdDSANamedCurveTable.CURVE_ED25519_SHA512)))
             return null;
         int totlen = 17 + seed.length;

core/java/src/net/i2p/crypto/eddsa/EdDSAPublicKey.java

@@ -72,7 +72,6 @@ public class EdDSAPublicKey implements EdDSAKey, PublicKey {
      *  @since implemented in 0.9.25
      */
     public byte[] getEncoded() {
-        // TODO no equals() implemented in spec, but it's essentially a singleton
         if (!edDsaSpec.equals(EdDSANamedCurveTable.getByName(EdDSANamedCurveTable.CURVE_ED25519_SHA512)))
             return null;
         int totlen = 15 + Abyte.length;

core/java/src/net/i2p/crypto/eddsa/math/FieldElement.java

@@ -3,6 +3,8 @@ package net.i2p.crypto.eddsa.math;
 import java.io.Serializable;
 
 /**
+ *
+ * Note: concrete subclasses must implement hashCode() and equals()
  *
  * @since 0.9.15
  *