Remove obsolete ubsan suppression

presumably the issues have been fixed in libvpx and abseil since 2019.
Also remove dynamic cast suppression since dynamic cast is not allowed by the WebRTC styleguide and not used.

Bug: webrtc:42221195
Change-Id: I6ec370c207447e5ad6a36bafbc32dd73af4b3dc3
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/402605
Commit-Queue: Mirko Bonadei <mbonadei@webrtc.org>
Reviewed-by: Mirko Bonadei <mbonadei@webrtc.org>
Cr-Commit-Position: refs/heads/main@{#45256}
diff --git a/tools_webrtc/ubsan/suppressions.txt b/tools_webrtc/ubsan/suppressions.txt
index 2ece795..972fb54 100644
--- a/tools_webrtc/ubsan/suppressions.txt
+++ b/tools_webrtc/ubsan/suppressions.txt
@@ -10,11 +10,6 @@
 src:*/third_party/ffmpeg/libavcodec/*
 src:*/third_party/openh264/*
 
-# TODO(bugs.webrtc.org/11110).
-# Remove those once upstream code has been cleaned.
-src:*/third_party/abseil-cpp/absl/debugging/*
-src:*/third_party/libvpx/source/libvpx/vp8/*
-
 #############################################################################
 # Ignore system libraries.
 src:*/usr/*
diff --git a/tools_webrtc/ubsan/vptr_suppressions.txt b/tools_webrtc/ubsan/vptr_suppressions.txt
index 617ba88..3078956 100644
--- a/tools_webrtc/ubsan/vptr_suppressions.txt
+++ b/tools_webrtc/ubsan/vptr_suppressions.txt
@@ -20,8 +20,3 @@
 src:*/third_party/protobuf/src/google/protobuf/compiler/cpp/cpp_message.cc
 src:*/third_party/protobuf/src/google/protobuf/descriptor.pb.cc
 
-#############################################################################
-# UBsan goes into an infinite recursion when __dynamic_cast instrumented with
-# "vptr". See crbug.com/609786.
-
-src:*/third_party/libc\+\+abi/trunk/src/private_typeinfo.cpp