Remove unnecessary category weights.

helper/category_weights.js
	-Address @missinglink's comment:
	https://github.com/pelias/api/pull/106#issuecomment-99401791
	-Remove category weights with default values, since they're
	unnecessary.

helper/category_weights.js

@@ -4,116 +4,7 @@
  */
 
 module.exports = {
-  'transport': 10,
+  'transport:air': 2,
-  'transport:air': 20,
+  'transport:air:aerodrome': 2,
-  'transport:air:aerodrome': 20,
+  'transport:air:airport': 2
-  'transport:air:airport': 20,
-  'recreation': 10,
-  'religion': 10,
-  'education': 10,
-  'entertainment': 10,
-  'nightlife': 10,
-  'food': 10,
-  'government': 10,
-  'professional': 10,
-  'finance': 10,
-  'health': 10,
-  'retail': 10,
-  'transport:public': 10,
-  'transport:bus': 10,
-  'transport:taxi': 10,
-  'transport:sea': 10,
-  'accomodation': 10,
-  'transport:station': 10,
-  'food:bagel': 10,
-  'food:barbecue': 10,
-  'food:bougatsa': 10,
-  'food:burger': 10,
-  'food:cake': 10,
-  'food:casserole': 10,
-  'food:chicken': 10,
-  'food:coffee_shop': 10,
-  'food:crepe': 10,
-  'food:couscous': 10,
-  'food:curry': 10,
-  'food:dessert': 10,
-  'food:donut': 10,
-  'food:empanada': 10,
-  'food:fish': 10,
-  'food:fish_and_chips': 10,
-  'food:fried_food': 10,
-  'food:friture': 10,
-  'food:gyro': 10,
-  'food:ice_cream': 10,
-  'food:kebab': 10,
-  'food:mediterranean': 10,
-  'food:noodle': 10,
-  'food:pancake': 10,
-  'food:pasta': 10,
-  'food:pie': 10,
-  'food:pizza': 10,
-  'food:regional': 10,
-  'food:sandwich': 10,
-  'food:sausage': 10,
-  'food:savory_pancakes': 10,
-  'food:seafood': 10,
-  'food:steak': 10,
-  'food:sub': 10,
-  'food:sushi': 10,
-  'food:tapas': 10,
-  'food:vegan': 10,
-  'food:vegetarian': 10,
-  'food:wings': 10,
-  'food:cuisine:african': 10,
-  'food:cuisine:american': 10,
-  'food:cuisine:arab': 10,
-  'food:cuisine:argentinian': 10,
-  'food:cuisine:asian': 10,
-  'food:cuisine:australian': 10,
-  'food:cuisine:baiana': 10,
-  'food:cuisine:balkan': 10,
-  'food:cuisine:basque': 10,
-  'food:cuisine:bavarian': 10,
-  'food:cuisine:belarusian': 10,
-  'food:cuisine:brazilian': 10,
-  'food:cuisine:cantonese': 10,
-  'food:cuisine:capixaba': 10,
-  'food:cuisine:caribbean': 10,
-  'food:cuisine:chinese': 10,
-  'food:cuisine:croatian': 10,
-  'food:cuisine:czech': 10,
-  'food:cuisine:danish': 10,
-  'food:cuisine:french': 10,
-  'food:cuisine:gaucho': 10,
-  'food:cuisine:german': 10,
-  'food:cuisine:greek': 10,
-  'food:cuisine:hunan': 10,
-  'food:cuisine:hungarian': 10,
-  'food:cuisine:indian': 10,
-  'food:cuisine:international': 10,
-  'food:cuisine:iranian': 10,
-  'food:cuisine:italian': 10,
-  'food:cuisine:japanese': 10,
-  'food:cuisine:korean': 10,
-  'food:cuisine:kyo_ryouri': 10,
-  'food:cuisine:latin_american': 10,
-  'food:cuisine:lebanese': 10,
-  'food:cuisine:malagasy': 10,
-  'food:cuisine:mexican': 10,
-  'food:cuisine:mineira': 10,
-  'food:cuisine:okinawa_ryori': 10,
-  'food:cuisine:pakistani': 10,
-  'food:cuisine:peruvian': 10,
-  'food:cuisine:polish': 10,
-  'food:cuisine:portuguese': 10,
-  'food:cuisine:rhenish': 10,
-  'food:cuisine:russian': 10,
-  'food:cuisine:shandong': 10,
-  'food:cuisine:sichuan': 10,
-  'food:cuisine:spanish': 10,
-  'food:cuisine:thai': 10,
-  'food:cuisine:turkish': 10,
-  'food:cuisine:vietnamese': 10,
-  'food:cuisine:westphalian': 10,
-  'transport:rail': 10
 };