Remove "private/bionic_pthread.h".

Bug: 17476168
Change-Id: Id642987e641de81e914a28daea4ffe9d11e090ed
diff --git a/libc/bionic/ndk_cruft.cpp b/libc/bionic/ndk_cruft.cpp
index 829e8f3..2cd2e33 100644
--- a/libc/bionic/ndk_cruft.cpp
+++ b/libc/bionic/ndk_cruft.cpp
@@ -320,4 +320,9 @@
   return malloc_usable_size(ptr);
 }
 
+// In L we added a public pthread_gettid_np, but some apps were using the private API.
+extern "C" pid_t __pthread_gettid(pthread_t t) {
+  return pthread_gettid_np(t);
+}
+
 #endif
diff --git a/libc/bionic/pthread_gettid_np.cpp b/libc/bionic/pthread_gettid_np.cpp
index f4663a7..c996a05 100644
--- a/libc/bionic/pthread_gettid_np.cpp
+++ b/libc/bionic/pthread_gettid_np.cpp
@@ -27,13 +27,7 @@
  */
 
 #include "pthread_internal.h"
-#include "private/bionic_pthread.h"
 
 pid_t pthread_gettid_np(pthread_t t) {
   return reinterpret_cast<pthread_internal_t*>(t)->tid;
 }
-
-// TODO: move callers over to pthread_gettid_np and remove this.
-pid_t __pthread_gettid(pthread_t t) {
-  return pthread_gettid_np(t);
-}