frame encryptor: remove note about not being production ready

as it has been used in production for a while already.

BUG=None

Change-Id: Idd466f3ad02129a8125e54122e77036959e67aa4
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/175131
Reviewed-by: Justin Uberti <juberti@webrtc.org>
Commit-Queue: Philipp Hancke <philipp.hancke@googlemail.com>
Cr-Commit-Position: refs/heads/master@{#31817}
diff --git a/api/crypto/frame_decryptor_interface.h b/api/crypto/frame_decryptor_interface.h
index ec900ab..2f6bdac 100644
--- a/api/crypto/frame_decryptor_interface.h
+++ b/api/crypto/frame_decryptor_interface.h
@@ -27,7 +27,6 @@
 // without it. You may assume that this interface will have the same lifetime
 // as the RTPReceiver it is attached to. It must only be attached to one
 // RTPReceiver. Additional data may be null.
-// Note: This interface is not ready for production use.
 class FrameDecryptorInterface : public rtc::RefCountInterface {
  public:
   // The Status enum represents all possible states that can be
diff --git a/api/crypto/frame_encryptor_interface.h b/api/crypto/frame_encryptor_interface.h
index d5b6d8a..1452b80 100644
--- a/api/crypto/frame_encryptor_interface.h
+++ b/api/crypto/frame_encryptor_interface.h
@@ -24,7 +24,6 @@
 // addition to the standard SRTP mechanism and is not intended to be used
 // without it. Implementations of this interface will have the same lifetime as
 // the RTPSenders it is attached to. Additional data may be null.
-// Note: This interface is not ready for production use.
 class FrameEncryptorInterface : public rtc::RefCountInterface {
  public:
   ~FrameEncryptorInterface() override {}