Remove bogus check for GRASS_RENDER_IMMEDIATE or MONITOR

git-svn-id: https://svn.osgeo.org/grass/grass/trunk@63361 15284696-431f-4ddb-bdfa-cd5b030d7da7

lib/display/r_raster.c

@@ -157,9 +157,6 @@ int D_open_driver(void)
 
     init();
 
-    if (!getenv("GRASS_RENDER_IMMEDIATE") && !m)
-	return 1;
-
     return 0;
 }