Revert JsepIceCandidate and IceCandidateInterface deprecation

This reverts the jsep.h change from:
https://webrtc-review.googlesource.com/c/src/+/404840

This is currently blocking the roll into chromium due to required
changes in the nearby repo.

Bug: webrtc:42233526, webrtc:406795492
Change-Id: I422dc44e181c7368c5bc95ebd8f6e6c3547e1f73
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/405480
Auto-Submit: Tomas Gunnarsson <tommi@webrtc.org>
Commit-Queue: Tomas Gunnarsson <tommi@webrtc.org>
Commit-Queue: Danil Chapovalov <danilchap@webrtc.org>
Reviewed-by: Danil Chapovalov <danilchap@webrtc.org>
Reviewed-by: Harald Alvestrand <hta@webrtc.org>
Cr-Commit-Position: refs/heads/main@{#45399}
diff --git a/api/jsep.h b/api/jsep.h
index 18fe5a8..bd32144 100644
--- a/api/jsep.h
+++ b/api/jsep.h
@@ -111,8 +111,8 @@
 
 // TODO: webrtc:406795492 - Deprecate and eventually remove these types when no
 // longer referenced. They're provided here for backwards compatiblity.
-using JsepIceCandidate [[deprecated("Use IceCandidate")]] = IceCandidate;
-using IceCandidateInterface [[deprecated("Use IceCandidate")]] = IceCandidate;
+using JsepIceCandidate = IceCandidate;
+using IceCandidateInterface = IceCandidate;
 
 // Creates an IceCandidate based on SDP string.
 // Returns null if the sdp string can't be parsed.