Removed isatty() since we are now using newlib's implementation as

a result of enabling the newlib POSIX directory.

c/src/exec/libcsupport/include/rtems/libio.h

@@ -97,7 +97,6 @@ int __rtems_write(int fd, const void *buffer, unsigned32 count);
 int __rtems_ioctl(int fd, unsigned32  command, void *buffer);
 int __rtems_lseek(int fd, rtems_libio_offset_t offset, int whence);
 int __rtems_fstat(int _fd, struct stat* _sbuf);
-int __rtems_isatty(int _fd);
 
 /*
  * External I/O handlers

c/src/lib/include/rtems/libio.h

@@ -97,7 +97,6 @@ int __rtems_write(int fd, const void *buffer, unsigned32 count);
 int __rtems_ioctl(int fd, unsigned32  command, void *buffer);
 int __rtems_lseek(int fd, rtems_libio_offset_t offset, int whence);
 int __rtems_fstat(int _fd, struct stat* _sbuf);
-int __rtems_isatty(int _fd);
 
 /*
  * External I/O handlers

c/src/lib/libc/libio.h

@@ -97,7 +97,6 @@ int __rtems_write(int fd, const void *buffer, unsigned32 count);
 int __rtems_ioctl(int fd, unsigned32  command, void *buffer);
 int __rtems_lseek(int fd, rtems_libio_offset_t offset, int whence);
 int __rtems_fstat(int _fd, struct stat* _sbuf);
-int __rtems_isatty(int _fd);
 
 /*
  * External I/O handlers

c/src/lib/libc/newlibif.c

@@ -53,16 +53,6 @@ close(int fd)
     return __rtems_close(fd);
 }
 
-/*
- * isatty -- returns 1 if connected to a terminal device,
- *           returns 0 if not.
- */
-int
-isatty(int fd)
-{
-    return __rtems_isatty(fd);
-}
-
 /*
  * lseek -- move read/write pointer. Since a serial port
  *          is non-seekable, we return an error.

c/src/lib/libc/syscalls.c

@@ -71,15 +71,6 @@ int __rtems_fstat(int _fd, struct stat* _sbuf)
   return 0;
 }
 
-int __rtems_isatty(int _fd)
-{
-  struct stat st;
-
-  if (__rtems_fstat(_fd, &st) < 0)
-    return 0;
-  return S_ISCHR (st.st_mode);
-}
-
 #if !defined(RTEMS_UNIX)
 int stat( const char *path, struct stat *buf )
 {

cpukit/libcsupport/include/rtems/libio.h

@@ -97,7 +97,6 @@ int __rtems_write(int fd, const void *buffer, unsigned32 count);
 int __rtems_ioctl(int fd, unsigned32  command, void *buffer);
 int __rtems_lseek(int fd, rtems_libio_offset_t offset, int whence);
 int __rtems_fstat(int _fd, struct stat* _sbuf);
-int __rtems_isatty(int _fd);
 
 /*
  * External I/O handlers