r.in.ascii: remove -i, -f, -d flags from manual, fixes https://trac.osgeo.org/grass/ticket/3813

git-svn-id: https://svn.osgeo.org/grass/grass/trunk@74389 15284696-431f-4ddb-bdfa-cd5b030d7da7

raster/r.in.ascii/r.in.ascii.html

@@ -57,8 +57,8 @@ that all the data for a row be on one line. A row may be
 split over many lines. 
 
 <p>
-<em>r.in.ascii</em> may import <i>integer</i>, <i>floating point</i>, or <i>double</i> cell 
-types using the <b>-i</b>, <b>-f</b>, and <b>-d</b> flags, respectively. 
+The imported cell type can be forced using the <b>type</b> option, 
+default is auto-detection. 
 
 <p>
 The header information in ESRI Raster ASCII files differs from GRASS.