pg_upgrade: remove -h option

-h (help) is not needed;  pg_upgrade already supports --help and -?,
which is consistent with other tools.

contrib/pg_upgrade/option.c

@@ -82,8 +82,7 @@ parseCommandLine(int argc, char *argv[])
 
 	if (argc > 1)
 	{
-		if (strcmp(argv[1], "--help") == 0 || strcmp(argv[1], "-h") == 0 ||
-			strcmp(argv[1], "-?") == 0)
+		if (strcmp(argv[1], "--help") == 0 || strcmp(argv[1], "-?") == 0)
 		{
 			usage();
 			exit(0);
@@ -244,7 +243,7 @@ Options:\n\
   -U, --username=NAME           cluster superuser (default \"%s\")\n\
   -v, --verbose                 enable verbose internal logging\n\
   -V, --version                 display version information, then exit\n\
-  -?, -h, --help                show this help, then exit\n\
+  -?, --help                    show this help, then exit\n\
 \n\
 Before running pg_upgrade you must:\n\
   create a new database cluster (using the new version of initdb)\n\

doc/src/sgml/pgupgrade.sgml

@@ -181,7 +181,6 @@
 
      <varlistentry>
       <term><option>-?</option></term>
-      <term><option>-h</option></term>
       <term><option>--help</option></term>
       <listitem><para>show help, then exit</para></listitem>
      </varlistentry>