Remove mentioning of ProviderException

Author: GoeLin

src/java.base/share/classes/com/sun/crypto/provider/DHPrivateKey.java

@@ -32,7 +32,6 @@
 import java.security.KeyRep;
 import java.security.PrivateKey;
 import java.security.InvalidKeyException;
-import java.security.ProviderException;
 import javax.crypto.spec.DHParameterSpec;
 import sun.security.util.*;
 
@@ -208,8 +207,6 @@ private static byte[] encode(BigInteger p, BigInteger g, int l,
      * @param x the private value
      * @param p the prime modulus
      * @param g the base generator
-     *
-     * @throws ProviderException if the key cannot be encoded
      */
     DHPrivateKey(BigInteger x, BigInteger p, BigInteger g)
             throws InvalidKeyException {
@@ -225,8 +222,6 @@ private static byte[] encode(BigInteger p, BigInteger g, int l,
      * @param p the prime modulus
      * @param g the base generator
      * @param l the private-value length
-     *
-     * @throws ProviderException if the key cannot be encoded
      */
     DHPrivateKey(BigInteger x, BigInteger p, BigInteger g, int l) {
         this.x = x;