remove @macports for no|openmaintainer

[Lawrence Velázquez]

I don't see why not, although I'd prefer something simpler, like this.

vq

diff --git a/base/src/port/port.tcl b/base/src/port/port.tcl
index 76a53c9..f81f891 100644
--- a/base/src/port/port.tcl
+++ b/base/src/port/port.tcl
@@ -686,7 +686,7 @@ proc unobscure_maintainers { list } {
         if {[string first "@" $m] < 0} {
             if {[string first ":" $m] >= 0} {
                 set m [regsub -- "(.*):(.*)" $m "\\2@\\1"] 
-            } else {
+            } elseif {$m ne "openmaintainer" && $m ne "nomaintainer"} {
                 set m "$m at macports.org"
             }
         }