Remove include <linux/android_pmem.h>

This file is not needed any more and it doesn't exist in the uapi kernel
headers.

Bug: 11559337
Change-Id: I98ca57c3c220f57de63dba1cb99aa2781658674f
diff --git a/camera/QCamera2/stack/mm-jpeg-interface/test/mm_jpeg_ionbuf.h b/camera/QCamera2/stack/mm-jpeg-interface/test/mm_jpeg_ionbuf.h
index 7bc62cc..d25156b 100644
--- a/camera/QCamera2/stack/mm-jpeg-interface/test/mm_jpeg_ionbuf.h
+++ b/camera/QCamera2/stack/mm-jpeg-interface/test/mm_jpeg_ionbuf.h
@@ -36,7 +36,6 @@
 #include <sys/mman.h>
 #include <unistd.h>
 #include <errno.h>
-#include <linux/android_pmem.h>
 #include <fcntl.h>
 #include "mm_jpeg_dbg.h"