libc/stdio: Remove sys/types.h inclusion for printf/scanf

since double_t move from sys/types.h to math.h now and remove
math.h inclusion too because lib_dtoa_engine.h already include

Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
Change-Id: I3497a73908301d999cf1cfc4a66552a7ca4868c6

libs/libc/stdio/legacy_libvsprintf.c

@@ -39,7 +39,6 @@
 
 #include <nuttx/compiler.h>
 
-#include <math.h>
 #include <wchar.h>
 #include <stdint.h>
 #include <stdbool.h>

libs/libc/stdio/lib_dtoa_data.c

@@ -37,7 +37,6 @@
  * Included Files
  ****************************************************************************/
 
-#include <sys/types.h>
 #include "lib_dtoa_engine.h"
 
 /****************************************************************************
@@ -275,3 +274,7 @@ const double_t g_dtoa_round[] =
   5e0,
 #endif
 };
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/

libs/libc/stdio/lib_dtoa_engine.c

@@ -37,9 +37,6 @@
  * Included Files
  ****************************************************************************/
 
-#include <sys/types.h>
-#include <math.h>
-
 #include "lib_dtoa_engine.h"
 
 /****************************************************************************

libs/libc/stdio/lib_libdtoa.c

@@ -46,7 +46,6 @@
 
 #include <nuttx/config.h>
 
-#include <sys/types.h>
 #include <stdbool.h>
 #include <math.h>
 #include <assert.h>

libs/libc/stdio/lib_libvsprintf.c

@@ -42,7 +42,6 @@
 
 #include <nuttx/config.h>
 
-#include <sys/types.h>
 #include <stdarg.h>
 #include <stdio.h>
 #include <stdlib.h>