diff --git a/3rdparty/cpprestsdk/src/pplx/threadpool.cpp b/3rdparty/cpprestsdk/src/pplx/threadpool.cpp
deleted file mode 100644
index 8b5d9bd191a0450d6b50cf78da3a493937832b16..0000000000000000000000000000000000000000
--- a/3rdparty/cpprestsdk/src/pplx/threadpool.cpp
+++ /dev/null
@@ -1,79 +0,0 @@
-/***
-* ==++==
-*
-* Copyright (c) Microsoft Corporation. All rights reserved.
-* Licensed under the Apache License, Version 2.0 (the "License");
-* you may not use this file except in compliance with the License.
-* You may obtain a copy of the License at
-* http://www.apache.org/licenses/LICENSE-2.0
-*
-* Unless required by applicable law or agreed to in writing, software
-* distributed under the License is distributed on an "AS IS" BASIS,
-* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-* See the License for the specific language governing permissions and
-* limitations under the License.
-*
-* ==--==
-* =+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+
-**/
-#include "stdafx.h"
-
-#if defined(__ANDROID__)
-#include <android/log.h>
-#include <jni.h>
-#endif
-
-namespace crossplat
-{
-#if (defined(ANDROID) || defined(__ANDROID__))
-// This pointer will be 0-initialized by default (at load time).
-std::atomic<JavaVM*> JVM;
-
-static void abort_if_no_jvm()
-{
-    if (JVM == nullptr)
-    {
-        __android_log_print(ANDROID_LOG_ERROR, "CPPRESTSDK", "%s", "The CppREST SDK must be initialized before first use on android: https://casablanca.codeplex.com/wikipage?title=Use%20on%20Android");
-        std::abort();
-    }
-}
-
-JNIEnv* get_jvm_env()
-{
-    abort_if_no_jvm();
-    JNIEnv* env = nullptr;
-    auto result = JVM.load()->AttachCurrentThread(&env, nullptr);
-    if (result != JNI_OK)
-    {
-        throw std::runtime_error("Could not attach to JVM");
-    }
-
-    return env;
-}
-
-threadpool& threadpool::shared_instance()
-{
-    abort_if_no_jvm();
-    static threadpool s_shared(40);
-    return s_shared;
-}
-
-#else
-
-// initialize the static shared threadpool
-threadpool& threadpool::shared_instance()
-{
-    static threadpool s_shared(40);
-    return s_shared;
-}
-
-#endif
-
-}
-
-#if defined(__ANDROID__)
-void cpprest_init(JavaVM* vm) {
-    crossplat::JVM = vm;
-}
-#endif
-