diff --git a/staticlibs/native/netjniutils/netjniutils.cpp b/staticlibs/native/netjniutils/netjniutils.cpp
index ef49cf657c..26e306069d 100644
--- a/staticlibs/native/netjniutils/netjniutils.cpp
+++ b/staticlibs/native/netjniutils/netjniutils.cpp
@@ -15,40 +15,19 @@
 #define LOG_TAG "netjniutils"
 
 #include "netjniutils/netjniutils.h"
-#include <android-modules-utils/sdk_level.h>
 
 #include <dlfcn.h>
 #include <stdbool.h>
 #include <stdlib.h>
-#include <sys/system_properties.h>
 
-#include <android/api-level.h>
 #include <android/log.h>
 
 namespace android {
 namespace netjniutils {
 
-static int GetNativeFileDescriptorWithoutNdk(JNIEnv* env, jobject javaFd) {
-  // Prior to Android S, we need to find the descriptor field in the FileDescriptor class. The
-  // symbol name has been stable in libcore, but is a private implementation detail.
-  // Older libnativehelper_compat_c++ versions had a jniGetFdFromFileDescriptor method, but this
-  // was removed in S to replace it with the NDK API in libnativehelper.
-  // The code is copied here instead. This code can be removed once R is not supported anymore.
-  static const jfieldID descriptorFieldID = [env]() -> jfieldID {
-    jclass cls = env->FindClass("java/io/FileDescriptor");
-    jfieldID fieldID = env->GetFieldID(cls, "descriptor", "I");
-    env->DeleteLocalRef(cls);
-    if (fieldID == nullptr) {
-      __android_log_print(ANDROID_LOG_FATAL, LOG_TAG, "Failed to get descriptor field.");
-      abort();
-    }
-    return fieldID;
-  }();
+int GetNativeFileDescriptor(JNIEnv* env, jobject javaFd) {
+  if (!javaFd) return -1;
 
-  return env->GetIntField(javaFd, descriptorFieldID);
-}
-
-static int GetNativeFileDescriptorWithNdk(JNIEnv* env, jobject javaFd) {
   // Since Android S, there is an NDK API to get a file descriptor present in libnativehelper.so.
   // libnativehelper is loaded into all processes by the zygote since the zygote uses it
   // to load the Android Runtime and is also a public library (because of the NDK API).
@@ -68,15 +47,5 @@ static int GetNativeFileDescriptorWithNdk(JNIEnv* env, jobject javaFd) {
   return ndkGetFd(env, javaFd);
 }
 
-int GetNativeFileDescriptor(JNIEnv* env, jobject javaFd) {
-  if (!javaFd) return -1;
-  static const bool preferNdkFileDescriptorApi = modules::sdklevel::IsAtLeastS();
-  if (preferNdkFileDescriptorApi) {
-    return GetNativeFileDescriptorWithNdk(env, javaFd);
-  } else {
-    return GetNativeFileDescriptorWithoutNdk(env, javaFd);
-  }
-}
-
 }  // namespace netjniutils
 }  // namespace android