Ports/mandoc: Remove obsolete patches

Since the creation of the port, we gained support for nanosleep(),
WSTOPSIG(), and the getopt family of functions is now available in
unistd.h.

Ports/mandoc/patches/fix-main.patch

@@ -8,14 +8,6 @@
  #if HAVE_SANDBOX_INIT
  #include <sandbox.h>
  #endif
-@@ -42,6 +41,7 @@
- #include <termios.h>
- #include <time.h>
- #include <unistd.h>
-+#include <getopt.h>
- 
- #include "mandoc_aux.h"
- #include "mandoc.h"
 @@ -54,6 +54,7 @@
  #include "main.h"
  #include "manconf.h"
@@ -24,20 +16,3 @@
  
  enum	outmode {
  	OUTMODE_DEF = 0,
-@@ -660,6 +661,7 @@
- 			if (!WIFSTOPPED(status))
- 				break;
- 
-+#define WSTOPSIG(x) 0
- 			signum = WSTOPSIG(status);
- 		}
- 		tag_unlink();
-@@ -1239,7 +1241,7 @@
- 	/* Do not start the pager before controlling the terminal. */
- 
- 	while (tcgetpgrp(STDOUT_FILENO) != getpid())
--		nanosleep(&timeout, NULL);
-+		sleep(1);
- 
- 	execvp(argv[0], argv);
- 	err((int)MANDOCLEVEL_SYSERR, "exec %s", argv[0]);