option not req'd as a default answer exists

git-svn-id: https://svn.osgeo.org/grass/grass/trunk@43273 15284696-431f-4ddb-bdfa-cd5b030d7da7

scripts/m.proj/m.proj.py

@@ -35,7 +35,6 @@
 #% gisprompt: old_file,file,file
 #% description: Input coordinate file ('-' to read from stdin)
 #% answer: -
-#% required : yes
 #% key_desc : filename
 #% guisection: Files & format
 #%end