Removed legacy codes from i18n

These codes have been renamed, so entries removed from i18n

Author: gwharton

app/code/Magento/Dhl/i18n/en_US.csv

@@ -23,14 +23,11 @@ Europack,Europack
 "Express 10:30","Express 10:30"
 "Domestic economy select","Domestic economy select"
 "Economy select","Economy select"
-"Break bulk economy","Break bulk economy"
 "Domestic express","Domestic express"
-Others,Others
 "Globalmail business","Globalmail business"
 "Same day","Same day"
 "Express 12:00","Express 12:00"
 "Express envelope","Express envelope"
-"Customer services","Customer services"
 Jetline,Jetline
 "Freight worldwide","Freight worldwide"
 "Jumbo box","Jumbo box"