Remove HAVE_MMAP and BROKEN_MMAP

BROKEN_MMAP is no longer defined since commit
   1cfd5c06ef ("Remove portability support for mmap")

this commit also removed other HAVE_MMAP user. I didn't find anything
that defines HAVE_MMAP. The check does not trigger because compression
on server side is by default COMP_DELAYED (2) so it never triggers.

Remove remaining HAVE_MMAP and BROKEN_MMAP bits.

Signed-off-by: Sebastian Andrzej Siewior <sebastian@breakpoint.cc>

defines.h

@@ -829,10 +829,6 @@ struct winsize {
 # define getgroups(a,b) ((a)==0 && (b)==NULL ? NGROUPS_MAX : getgroups((a),(b)))
 #endif
 
-#if defined(HAVE_MMAP) && defined(BROKEN_MMAP)
-# undef HAVE_MMAP
-#endif
-
 #ifndef IOV_MAX
 # if defined(_XOPEN_IOV_MAX)
 #  define	IOV_MAX		_XOPEN_IOV_MAX

servconf.c

@@ -495,15 +495,6 @@ fill_default_server_options(ServerOptions *options)
 		options->auth_methods[0] = NULL;
 		options->num_auth_methods = 0;
 	}
-
-#ifndef HAVE_MMAP
-	if (use_privsep && options->compression == 1) {
-		error("This platform does not support both privilege "
-		    "separation and compression");
-		error("Compression disabled");
-		options->compression = 0;
-	}
-#endif
 }
 
 /* Keyword tokens. */