unix-Makefile.tmpl: omit lib<rary>.a updates from directory targets.

Since corresponding rule was removed from windows-makefile.tmpl out
of necessity, question popped if it's appropriate to harmonize even
unix-Makefile.tmpl. Note that as long as you work on single directory
'make lib<rary>.a' is effectively equivalent to 'make <dir/ectory>'
prior this modification.
Reviewed-by: NRich Salz <rsalz@openssl.org>
Reviewed-by: NRichard Levitte <levitte@openssl.org>

Configurations/unix-Makefile.tmpl

@@ -1086,10 +1086,7 @@ EOF
           next unless defined($unified_info{dirinfo}->{$dir}->{products}->{$type});
           if ($type eq "lib") {
               foreach my $lib (@{$unified_info{dirinfo}->{$dir}->{products}->{$type}}) {
-                  push @actions, <<"EOF";
-	\$(AR) $lib$libext \$\?
-	\$(RANLIB) $lib$libext || echo Never mind.
-EOF
+                  push @actions, "";
               }
           } else {
               foreach my $prod (@{$unified_info{dirinfo}->{$dir}->{products}->{$type}}) {