Fix libcutils/dlmalloc_stubs.c build breakage.

Change-Id: I344c410c100ce13c7a88063bf5354ad61c50094b
diff --git a/libcutils/dlmalloc_stubs.c b/libcutils/dlmalloc_stubs.c
index 6dca911..2db473d 100644
--- a/libcutils/dlmalloc_stubs.c
+++ b/libcutils/dlmalloc_stubs.c
@@ -14,7 +14,6 @@
  * limitations under the License.
  */
 
-#include "../../../bionic/libc/bionic/dlmalloc.h"
 #include "log/log.h"
 
 #define UNUSED __attribute__((__unused__))