cc3200: Remove remaining references to std.h.

cc3200/bootmgr/main.c

@@ -26,8 +26,7 @@
 
 #include <stdint.h>
 #include <stdbool.h>
-
-#include "std.h"
+#include <stdio.h>
 
 #include "py/mpconfig.h"
 #include "hw_ints.h"

cc3200/mods/modmachine.c

@@ -26,7 +26,6 @@
  */
 
 #include <stdint.h>
-#include "std.h"
 
 #include "py/mpstate.h"
 #include "py/runtime.h"

cc3200/mods/modnetwork.c

@@ -25,8 +25,6 @@
  * THE SOFTWARE.
  */
 
-#include <std.h>
-
 #include "py/mpstate.h"
 #include "py/obj.h"
 #include "py/nlr.h"

cc3200/mods/modussl.c

@@ -25,7 +25,6 @@
  */
 
 #include <stdint.h>
-#include <std.h>
 
 #include "simplelink.h"
 #include "py/mpconfig.h"

cc3200/mods/pybrtc.c

@@ -25,8 +25,6 @@
  * THE SOFTWARE.
  */
 
-#include <std.h>
-
 #include "py/mpconfig.h"
 #include "py/obj.h"
 #include "py/runtime.h"