Bug 1299580 - Remove unused string from storage.properties file;r=flod

MozReview-Commit-ID: K1xTCYUKem6

--HG--
extra : rebase_source : 33abf20c2c68d46c565bd4833dc1f4153c8136c0

devtools/client/locales/en-US/storage.properties

@@ -9,12 +9,6 @@
 # A good criteria is the language in which you'd find the best documentation
 # on web development on the web.
 
-# LOCALIZATION NOTE (storage.tooltip3):
-# This string is displayed in the tooltip of the tab when the storage editor is
-# displayed inside the developer tools window.
-# A keyboard shortcut for Storage Inspector will be shown inside the brackets.
-storage.tooltip3=Storage Inspector (Cookies, Local Storage, …) (%S)
-
 # LOCALIZATION NOTE (storage.filter.key):
 # Key shortcut used to focus the filter box on top of the data view
 storage.filter.key=CmdOrCtrl+F