Since we can't convince you GPG guyz :-)
.procmailrc:
:0 Bf
* -----BEGIN PGP
| pgp_clean
pgp_clean:
#!/bin/sh -- # A comment mentioning perl
eval 'exec perl -S $0 ${1+"$@"}'
if 0;
while (<>) { $msg .= $_ }
$msg =~ s/-----BEGIN PGP SIGNED(.|\n)*?Hash:.*\n\n//;
$msg =~ s/-----BEGIN PGP SIGNATURE(.|\n)*?-----END PGP SIGNATURE-----\n//;
print $msg;
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