Remove unnecessary #include.

Change-Id: I99dade0b3803272ee29eba2ad36b0311f8a24c31
diff --git a/libc/bionic/timer.cpp b/libc/bionic/timer.cpp
index 76619f3..ed73821 100644
--- a/libc/bionic/timer.cpp
+++ b/libc/bionic/timer.cpp
@@ -29,7 +29,6 @@
 #include "pthread_internal.h"
 
 #include <errno.h>
-#include <linux/time.h>
 #include <stdio.h>
 #include <string.h>