Remove forgotten dead code from #13 and #14 (#21)

#13 isn't a perfect revert of 0af22dc limited to SSLContextImpl.java and
SunJSSE.java, since it doesn't remove the SharedSecrets import. This was
already in this way in rh2020290-support_tls_1_3_in_fips.v1.patch, I'm
now realizing this when doing the OpenJDK 11 backport and retrying the
same approach in OpenJDK 17:
~~~
# Revert #13
git show 0bd5ca9 | git apply -R
# Redo #13 by reverting 0af22dc in SSLContextImpl.java and SunJSSE.java
git show 0af22dc |
  git apply -R --include=src/java.base/share/classes/sun/security/ssl/*
~~~

In #14, I forgot to delete the DHKF and DHKFLock static
variables from FIPSKeyImporter, which are no longer used,
see #14 (comment).

Reviewed-by: @gnu-andrew

Author: franferrax

src/java.base/share/classes/sun/security/ssl/SSLContextImpl.java

@@ -32,7 +32,6 @@
 import java.util.*;
 import java.util.concurrent.locks.ReentrantLock;
 import javax.net.ssl.*;
-import jdk.internal.access.SharedSecrets;
 import sun.security.action.GetPropertyAction;
 import sun.security.provider.certpath.AlgorithmChecker;
 import sun.security.validator.Validator;

src/jdk.crypto.cryptoki/share/classes/sun/security/pkcs11/FIPSKeyImporter.java

@@ -72,9 +72,6 @@ final class FIPSKeyImporter {
     private static volatile Provider sunECProvider = null;
     private static final ReentrantLock sunECProviderLock = new ReentrantLock();
 
-    private static volatile KeyFactory DHKF = null;
-    private static final ReentrantLock DHKFLock = new ReentrantLock();
-
     static Long importKey(SunPKCS11 sunPKCS11, long hSession, CK_ATTRIBUTE[] attributes)
             throws PKCS11Exception {
         long keyID = -1;
@@ -319,8 +316,7 @@ private static void exportPrivateKey(
                     CKA_PRIVATE_EXPONENT, CKA_PRIME_1, CKA_PRIME_2,
                     CKA_EXPONENT_1, CKA_EXPONENT_2, CKA_COEFFICIENT);
             RSAPrivateKey rsaPKey = RSAPrivateCrtKeyImpl.newKey(
-                    RSAUtil.KeyType.RSA, "PKCS#8", plainExportedKey
-            );
+                    RSAUtil.KeyType.RSA, "PKCS#8", plainExportedKey);
             CK_ATTRIBUTE attr;
             if ((attr = sensitiveAttrs.get(CKA_PRIVATE_EXPONENT)) != null) {
                 attr.pValue = rsaPKey.getPrivateExponent().toByteArray();