r.neighbors: remove obsolete part from manual about running module on command line

git-svn-id: https://svn.osgeo.org/grass/grass/trunk@62210 15284696-431f-4ddb-bdfa-cd5b030d7da7

raster/r.neighbors/r.neighbors.html

@@ -11,14 +11,6 @@ value equal to the average of the values
 appearing in its 3 x 3 cell "neighborhood" in the input
 layer.
 
-<p>
-The program will be run non-interactively if the user
-specifies program arguments (see OPTIONS) on the command
-line.  Alternately, the user can simply type
-<em><b>r.neighbors</b></em> on the command line, without program
-arguments.  In this case, the user will be prompted for
-flag settings and parameter values.
-
 <h3>OPTIONS</h3>
 
 The user must specify the names of the raster map layers to