kill some old macros

src/lib/libc/hash/rmd160.3

@@ -1,4 +1,4 @@
-.\"	$OpenBSD: rmd160.3,v 1.7 1999/05/25 13:06:45 aaron Exp $
+.\"	$OpenBSD: rmd160.3,v 1.8 1999/05/25 21:16:24 aaron Exp $
 .\"
 .\" Copyright (c) 1997 Todd C. Miller <Todd.Miller@courtesan.com>
 .\" All rights reserved.
@@ -186,7 +186,7 @@ perform byte swapping on little endian machines such as the i386, alpha,
 and vax.
 .Sh AUTHOR
 This implementation of RMD-160 was written by Antoon Bosselaers.
-.br
+.Pp
 The
 .Fn RMD160End ,
 .Fn RMD160File ,

src/lib/libc/hash/sha1.3

@@ -1,4 +1,4 @@
-.\"	$OpenBSD: sha1.3,v 1.12 1999/05/25 13:06:45 aaron Exp $
+.\"	$OpenBSD: sha1.3,v 1.13 1999/05/25 21:16:25 aaron Exp $
 .\"
 .\" Copyright (c) 1997 Todd C. Miller <Todd.Miller@courtesan.com>
 .\" All rights reserved.
@@ -186,7 +186,7 @@ perform byte swapping on little endian machines such as the i386, alpha,
 and vax.
 .Sh AUTHOR
 This implementation of SHA-1 was written by Steve Reid.
-.br
+.Pp
 The
 .Fn SHA1End ,
 .Fn SHA1File ,