Enabling clang::find_bad_constructs for libjingle_peerconnection_api.

This CL removes //build/config/clang:find_bad_constructs from the
suppressed_configs list, which means that clang:find_bad_constructs
is now enabled on these translation units.

Bug: webrtc:9251, webrtc:163
Change-Id: I5475e574353c772910181495fdb3400b5f0e7399
Reviewed-on: https://webrtc-review.googlesource.com/87240
Commit-Queue: Mirko Bonadei <mbonadei@webrtc.org>
Reviewed-by: Karl Wiberg <kwiberg@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#24040}
diff --git a/api/rtpsenderinterface.h b/api/rtpsenderinterface.h
index 6003aa0..a7eec49 100644
--- a/api/rtpsenderinterface.h
+++ b/api/rtpsenderinterface.h
@@ -64,7 +64,7 @@
   virtual rtc::scoped_refptr<DtmfSenderInterface> GetDtmfSender() const = 0;
 
  protected:
-  virtual ~RtpSenderInterface() {}
+  ~RtpSenderInterface() override = default;
 };
 
 // Define proxy for RtpSenderInterface.