Build: clean away RENAME and SHARED_NAME

Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/8125)

Configure

@@ -1888,10 +1888,6 @@ if ($builder eq "unified") {
             qr/^\s*GENERATE\[((?:\\.|[^\\\]])+)\]\s*=\s*(.*)\s*$/
             => sub { push @{$generate{$1}}, $2
                          if !@skip || $skip[$#skip] > 0 },
-            qr/^\s*RENAME\[((?:\\.|[^\\\]])+)\]\s*=\s*(.*)\s*$/
-            => sub { warn "RENAME is no longer supported\n" },
-             qr/^\s*SHARED_NAME\[((?:\\.|[^\\\]])+)\]\s*=\s*(.*)\s*$/
-            => sub { warn "SHARED_NAME is no longer supported\n" },
             qr/^\s*(?:#.*)?$/ => sub { },
             "OTHERWISE" => sub { die "Something wrong with this line:\n$_\nat $sourced/$f" },
             "BEFORE" => sub {