r.mask: `tmp` map is already remove by cleanup()

git-svn-id: https://svn.osgeo.org/grass/grass/trunk@51370 15284696-431f-4ddb-bdfa-cd5b030d7da7

scripts/r.mask/r.mask.py

@@ -92,9 +92,8 @@ def main():
 	if invert:
 	    global tmp
 	    tmp = "r_mask_%d" % os.getpid()
-	    grass.run_command('g.rename', rast = ('MASK',tmp), quiet = True)
+	    grass.run_command('g.rename', rast = ('MASK', tmp), quiet = True)
 	    grass.mapcalc("MASK=if(isnull($tmp),1,null())", tmp = tmp)
-	    grass.run_command('g.remove', rast = tmp, quiet = True)
 	    grass.message(_("Inverted MASK created."))
 	else:
 	    grass.message(_("MASK created."))