Remove nonsense MONITOR checks from scripts

git-svn-id: https://svn.osgeo.org/grass/grass/trunk@63315 15284696-431f-4ddb-bdfa-cd5b030d7da7

scripts/d.correlate/d.correlate.py

@@ -32,11 +32,6 @@ from grass.script.utils import try_remove
 from grass.script import core as grass
 
 def main():
-    env = grass.gisenv()
-    mon = env.get('MONITOR', None)
-    if not mon:
-        grass.fatal(_("No graphics device selected. Use d.mon to select graphics device."))
-
     layers = options['map'].split(',')
 
     if len(layers) < 2:

scripts/d.rast.leg/d.rast.leg.py

@@ -81,11 +81,6 @@ def make_frame(f, b, t, l, r):
     os.environ['GRASS_RENDER_FRAME'] = s
 
 def main():
-    env = grass.gisenv()
-    mon = env.get('MONITOR', None)
-    if not mon:
-        grass.fatal(_("No graphics device selected. Use d.mon to select graphics device."))
-
     map = options['map']
     nlines = options['lines']
     rast = options['raster']

scripts/d.shade/d.shade.py

@@ -47,15 +47,6 @@ from grass.exceptions import CalledModuleError
 def main():
     options, unused = gcore.parser()
 
-    env = gcore.gisenv()
-    mon = env.get('MONITOR', None)
-    if not mon:
-        # os is needed only here
-        import os
-        if not 'GRASS_RENDER_IMMEDIATE' in os.environ:
-            gcore.fatal(_("No graphics device selected."
-                          " Use d.mon to select graphics device."))
-
     drape_map = options['drapemap']
     relief_map = options['reliefmap']
     brighten = options['brighten']

scripts/d.vect.thematic/d.vect.thematic.py

@@ -231,13 +231,6 @@ def out(fh, vars, tmpl):
 def main():
     global tmp_graph, tmp_group, tmp_psmap, tmp_psleg, tmp_gisleg
 
-    env = gcore.gisenv()
-    mon = env.get('MONITOR', None)
-    if not mon:
-        if not 'GRASS_RENDER_IMMEDIATE' in os.environ:
-            gcore.fatal(_("No graphics device selected."
-                          " Use d.mon to select graphics device."))
-
     breakpoints = options['breakpoints']
     colorscheme = options['colorscheme']
     column = options['column']