remove: u8g2,移除stdio的代码(禁用)

components/u8g2/u8x8_d_stdio.c

@@ -32,7 +32,7 @@
   ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.  
 
 */
-
+#if 0
 #include "u8x8.h"
 
 #include <stdio.h>
@@ -99,3 +99,4 @@ void u8x8_SetupStdio(u8x8_t *u8x8)
   u8x8->display_cb = u8x8_d_stdio;
 }
 
+#endif