remove termios2 related ioctls from sh ioctl.h

musl does not define these on other targets either.

arch/sh/bits/ioctl.h

@@ -85,10 +85,6 @@
 #define TCSETS              _IO('T', 2)
 #define TCSETSW             _IO('T', 3)
 #define TCSETSF             _IO('T', 4)
-#define TCGETS2             _IOR('T', 42, char[44])
-#define TCSETS2             _IOW('T', 43, char[44])
-#define TCSETSW2            _IOW('T', 44, char[44])
-#define TCSETSF2            _IOW('T', 45, char[44])
 #define TIOCGRS485          _IOR('T', 46, char[32])
 #define TIOCSRS485          _IOWR('T', 47, char[32])
 #define TIOCGPTN            _IOR('T', 48, unsigned int)