make: unifdef for SGE (undefined)

*** 506,522 ****
                          dmake_mode_type = distributed_mode;
                          no_parallel = false;
                  } else if (IS_EQUAL(dmake_value2->string_mb, NOCATGETS("parallel"))) {
                          dmake_mode_type = parallel_mode;
                          no_parallel = false;
- #ifdef SGE_SUPPORT
-                         grid = false;
-                 } else if (IS_EQUAL(dmake_value2->string_mb, NOCATGETS("grid"))) {
-                         dmake_mode_type = parallel_mode;
-                         no_parallel = false;
-                         grid = true;
- #endif
                  } else if (IS_EQUAL(dmake_value2->string_mb, NOCATGETS("serial"))) {
                          dmake_mode_type = serial_mode;
                          no_parallel = true;
                  } else {
                          fatal(catgets(catd, 1, 307, "Unknown dmake mode argument `%s' after -m flag"), dmake_value2->string_mb);
--- 506,515 ----
*** 1087,1102 ****
                                  }
                          }
                  }
          }
  
- #ifdef SGE_SUPPORT
-         /* Remove SGE script file */
-         if (grid) {
-                 unlink(script_file);
-         }
- #endif
  
          /* Have we locked .make.state or .nse_depinfo? */
          if ((make_state_lockfile != NULL) && (make_state_locked)) {
                  unlink(make_state_lockfile);
                  make_state_lockfile = NULL;
--- 1080,1089 ----