Revert "Add the assisted dialing carrier config."

This reverts commit af7b8c0a67f1f416e9156c375a940a47389ab838.

Reason for revert: we're cutting the feature from P

Change-Id: I1ccc2c36b480f64c3a8b3df7eee73f80b7863722
Bug: 73727182
diff --git a/telecomm/java/android/telecom/Connection.java b/telecomm/java/android/telecom/Connection.java
index 7522443..aaef8d3 100644
--- a/telecomm/java/android/telecom/Connection.java
+++ b/telecomm/java/android/telecom/Connection.java
@@ -35,7 +35,6 @@
 import android.os.Looper;
 import android.os.Message;
 import android.os.ParcelFileDescriptor;
-import android.os.Parcelable;
 import android.os.RemoteException;
 import android.os.SystemClock;
 import android.util.ArraySet;
@@ -402,6 +401,7 @@
 
     /**
      * Set by the framework to indicate that a connection is using assisted dialing.
+     * @hide
      */
     public static final int PROPERTY_ASSISTED_DIALING_USED = 1 << 9;
 
@@ -2538,19 +2538,6 @@
     }
 
     /**
-     * Adds a parcelable extra to this {@code Connection}.
-     *
-     * @param key The extra key.
-     * @param value The value.
-     * @hide
-     */
-    public final void putExtra(@NonNull String key, @NonNull Parcelable value) {
-        Bundle newExtras = new Bundle();
-        newExtras.putParcelable(key, value);
-        putExtras(newExtras);
-    }
-
-    /**
      * Removes extras from this {@code Connection}.
      *
      * @param keys The keys of the extras to remove.