Remove dead code related to gettid

The gettid system call is always available now.

Change-Id: Ib78b41781eda182dc8605daf456bbea7ff7c2dc0
diff --git a/media/libmedia/JetPlayer.cpp b/media/libmedia/JetPlayer.cpp
index 88157d2..8b953e0 100644
--- a/media/libmedia/JetPlayer.cpp
+++ b/media/libmedia/JetPlayer.cpp
@@ -23,13 +23,6 @@
 #include <media/JetPlayer.h>
 
 
-#ifdef HAVE_GETTID
-static pid_t myTid() { return gettid(); }
-#else
-static pid_t myTid() { return getpid(); }
-#endif
-
-
 namespace android
 {
 
@@ -188,7 +181,7 @@
     // signal main thread that we started
     {
         Mutex::Autolock l(mMutex);
-        mTid = myTid();
+        mTid = gettid();
         LOGV("JetPlayer::render(): render thread(%d) signal", mTid);
         mCondition.signal();
     }