Remove android.net.PskKeyManager

android.net.PskKeyManager does not work with upcoming TLS 1.3.
The class does not appear to be used by any Android apps and is thus
likely to be completely removed in the future.

Bug: 30978706
Test: make && make cts
Change-Id: Id9bae20362c5909e4621cdb00102bfee09d970ec
diff --git a/api/test-removed.txt b/api/test-removed.txt
index 239eab6..683a695 100644
--- a/api/test-removed.txt
+++ b/api/test-removed.txt
@@ -167,6 +167,13 @@
 
 package android.net {
 
+  public abstract class PskKeyManager {
+    ctor public PskKeyManager();
+    field public static final int MAX_IDENTITY_HINT_LENGTH_BYTES = 128; // 0x80
+    field public static final int MAX_IDENTITY_LENGTH_BYTES = 128; // 0x80
+    field public static final int MAX_KEY_LENGTH_BYTES = 256; // 0x100
+  }
+
   public class SSLCertificateSocketFactory extends javax.net.ssl.SSLSocketFactory {
     method public static deprecated org.apache.http.conn.ssl.SSLSocketFactory getHttpSocketFactory(int, android.net.SSLSessionCache);
   }