Revert "Hide APIs not intended to ship in DR."

This reverts commit 0c28d43fe1423198f99a0518887b69a4205bc6f7.
diff --git a/telecomm/java/android/telecom/Call.java b/telecomm/java/android/telecom/Call.java
index a6bfbad..c147578 100644
--- a/telecomm/java/android/telecom/Call.java
+++ b/telecomm/java/android/telecom/Call.java
@@ -19,7 +19,6 @@
 import android.annotation.IntDef;
 import android.annotation.Nullable;
 import android.annotation.SystemApi;
-import android.annotation.TestApi;
 import android.net.Uri;
 import android.os.Bundle;
 import android.os.Handler;
@@ -1077,17 +1076,12 @@
          * @return A string containing text sent by the remote user, or {@code null} if the
          * conversation has been terminated or if there was an error while reading.
          */
-        public String read() {
-            try {
-                int numRead = mReceiveStream.read(mReadBuffer, 0, READ_BUFFER_SIZE);
-                if (numRead < 0) {
-                    return null;
-                }
-                return new String(mReadBuffer, 0, numRead);
-            } catch (IOException e) {
-                Log.w(this, "Exception encountered when reading from InputStreamReader: %s", e);
+        public String read() throws IOException {
+            int numRead = mReceiveStream.read(mReadBuffer, 0, READ_BUFFER_SIZE);
+            if (numRead < 0) {
+                return null;
             }
-            return null;
+            return new String(mReadBuffer, 0, numRead);
         }
 
         /**
@@ -1095,9 +1089,7 @@
          * be read.
          * @return A string containing text entered by the user, or {@code null} if the user has
          * not entered any new text yet.
-         * @hide
          */
-        @TestApi
         public String readImmediately() throws IOException {
             if (mReceiveStream.ready()) {
                 return read();