Revert of Remove candidates when doing continual gathering

webrtc/api/jsepicecandidate.cc

Index: webrtc/api/jsepicecandidate.cc
diff --git a/webrtc/api/jsepicecandidate.cc b/webrtc/api/jsepicecandidate.cc
index cced1b4d6a51b68c657ada0d5b29189cd7104174..2aabcb83498ead96000f9624b423a21102516bfb 100644
--- a/webrtc/api/jsepicecandidate.cc
+++ b/webrtc/api/jsepicecandidate.cc
@@ -79,17 +79,4 @@
   return ret;
 }
 
-size_t JsepCandidateCollection::remove(const cricket::Candidate& candidate) {
-  auto iter = std::find_if(candidates_.begin(), candidates_.end(),
-                           [candidate](JsepIceCandidate* c) {
-                             return candidate.MatchesForRemoval(c->candidate());
-                           });
-  if (iter != candidates_.end()) {
-    delete *iter;
-    candidates_.erase(iter);
-    return 1;
-  }
-  return 0;
-}
-
 }  // namespace webrtc