kill: remove pid command-name to option alias

Removal was promised to happen in March 2016 and the time has come to get
rid of this unexpected feature.

Reference: c5b057b342
Reviewed-by: Benno Schulenberg <bensberg@justemail.net>
Signed-off-by: Sami Kerola <kerolasa@iki.fi>

Documentation/deprecated.txt

@@ -34,11 +34,6 @@ why:   does not provide control on output data formatting. The recommended solut
 
 --------------------------
 
-what:  "pid" as binary name for "kill --pid"
-why:   too ugly, too obscure
-
---------------------------
-
 What:   mkfs
 Why:    use filesystem specific mkfs.<type>.
 

misc-utils/kill.1

@@ -91,11 +91,6 @@ uid as the present process.
 \fB\-p\fR, \fB\-\-pid\fR
 Only print the process id (pid) of the named processes, do not send any
 signals.
-.IP
-The \fB\-\-pid\fR option is automatically enabled when the \fBkill\fR command
-is invoked with the name of
-.BR pid .
-This functionality is deprecated, and will be removed in March 2016.
 .TP
 \fB\-\-verbose\fR
 Print pid(s) that will be signaled with kill along with the signal.

misc-utils/kill.c

@@ -472,10 +472,6 @@ int main(int argc, char **argv)
 	textdomain(PACKAGE);
 	atexit(close_stdout);
 
-	ctl.do_pid = (!strcmp(program_invocation_short_name, "pid"));	/* Yecch */
-	if (ctl.do_pid)	/* FIXME: remove in March 2016.  */
-		warnx(_("use of 'kill --pid' option as command name is deprecated"));
-
 	argv = parse_arguments(argc, argv, &ctl);
 
 	/* The rest of the arguments should be process ids and names. */