Drop jerry_port_putchar

Recent changes eliminate the need for `jerry_port_putchar`. As port
API discussions don't make it likely that it will ever be needed
again, this patch removes its declaration from jerry-port.h and its
implementations from the port(s).

The related code in jerry-libc is not needed either: whatever `putc`
(and `puts`) can do, `printf` can do as well.

JerryScript-DCO-1.0-Signed-off-by: Akos Kiss akiss@inf.u-szeged.hu

targets/default/jerry-port-default-io.c

@@ -45,11 +45,3 @@ int jerry_port_errormsg (const char *format, /**< format string */
   va_end (args);
   return count;
 } /* jerry_port_errormsg */
-
-/**
- * Provide output character to console implementation for the engine.
- */
-int jerry_port_putchar (int c) /**< character to put */
-{
-  return putchar ((unsigned char) c);
-} /* jerry_port_putchar */

targets/esp8266/user/jerry_port.c

@@ -46,16 +46,6 @@ int jerry_port_errormsg (const char* format, ...)
   return count;
 }
 
-/**
- * Provide output character to console implementation for the engine.
- */
-int jerry_port_putchar (int c)
-{
-  printf ("%c", (char)c);
-  return c;
-}
-
-
 void exit (int status)
 {
   printf ("!!!! EXIT: %d\n", status);

targets/mbedk64f/source/jerry_port.c

@@ -43,11 +43,3 @@ int jerry_port_errormsg (const char* format, ...)
   va_end (args);
   return count;
 }
-
-/**
- * Provide output character to console implementation for the engine.
- */
-int jerry_port_putchar (int c)
-{
-  return putchar(c);
-}

targets/nuttx-stm32f4/main-nuttx.c

@@ -276,11 +276,3 @@ int jerry_port_errormsg (const char* format, ...)
   va_end (args);
   return count;
 }
-
-/**
- * Provide output character to console implementation for the engine.
- */
-int jerry_port_putchar (int c)
-{
-  return putchar(c);
-}