sys: clean up empty lines in .c and .h files

newlib/libc/sys/rtems/include/sys/_termios.h

@@ -146,7 +146,6 @@
 #define	CNO_RTSDTR	0x00200000	/* Do not assert RTS or DTR automatically */
 #endif
 
-
 /*
  * "Local" flags - dumping ground for other state
  *

newlib/libc/sys/rtems/include/sys/socket.h

@@ -73,7 +73,7 @@ typedef	__sa_family_t	sa_family_t;
 typedef	__socklen_t	socklen_t;
 #define	_SOCKLEN_T_DECLARED
 #endif
- 
+
 #ifndef _SSIZE_T_DECLARED
 typedef	__ssize_t	ssize_t;
 #define	_SSIZE_T_DECLARED
@@ -600,7 +600,6 @@ struct omsghdr {
 #define PRU_FLUSH_RDWR   SHUT_RDWR
 #endif
 
-
 #if __BSD_VISIBLE
 /*
  * sendfile(2) header/trailer struct