remove bash tips in readme

README

@@ -13,13 +13,3 @@ you need to create a relationship Hits "stats_about" X.
       object = ('BlogEntry', 'MicroBlogEntry')
 
 
-Tips
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-
-To import old records, use the power of bash, for example an month can be done like this ::
-
-  for i in {01..31}; do cubicweb-ctl update-webstats instance $i/05/2011; done
-
-Or for on a monthly basis, you can import a year (2010 in this example) ::
-
-  for i in {01..12}; do cubicweb-ctl update-webstats instance $i/2010; done