openmpi: remove dragonegg and llvm subports

The llvm compiler has been blacklisted for a very long time now. Dragonegg
compilers have been broken for years.

Closes: https://trac.macports.org/ticket/50766
Closes: https://trac.macports.org/ticket/50767
Closes: https://trac.macports.org/ticket/53078

science/openmpi/Portfile

@@ -80,8 +80,6 @@ array set clist {
     gcc5    {macports-gcc-5}
     gcc6    {macports-gcc-6}
     gcc7    {macports-gcc-7}
-    llvm    {llvm-gcc-4.2}
-    dragonegg34 {macports-dragonegg-3.4}
 }
 
 foreach key [array name clist] {
@@ -198,19 +196,11 @@ if {${subport} != ${name}} {
             Stub : fortran always enabled for gcc-based version
         } {}
         default_variants-append     +fortran
-    } elseif { [string first dragon $cname] == 0 } {
-        configure.args-delete   --disable-mpi-fortran
-        configure.args-append   --enable-mpi-fortran
-        select.file             ${filespath}/${name}-${cname}-fortran
-        variant fortran description {
-            Stub : fortran always enabled for dragonegg-based version
-        } {}
-        default_variants-append     +fortran
     } else {
         append long_description " (AND THE FORTRAN COMPILER SELECTED BY THE VARIANT, IF ANY)"
 
         compilers.choose   fc
-        compilers.setup    -dragonegg default_fortran
+        compilers.setup    default_fortran
 
         if {[fortran_variant_isset]} {
             configure.args-delete   --disable-mpi-fortran