Remove table from database before scraping

SqliteMagic creates a unique index at CREATE TABLE time. This means that if the unique index arguments of ScraperWiki.save_sqlite change, we need to create a new table to ensure the db reflects the change. Part of: everypolitician/everypolitician#593

scraper.rb

@@ -40,5 +40,5 @@ def scrape_list(url)
   end
 end
 
-ScraperWiki.sqliteexecute('DELETE FROM data') rescue nil
+ScraperWiki.sqliteexecute('DROP TABLE data') rescue nil
 scrape_list('http://www.congres.nc/assemblee/les-elus/?panel=5')